The study of the chimpanzee, one of the human species' closest relatives, has led scientists to exciting discoveries about evolution, behavior, and cognition over the past half century. In this book, rising and veteran scholars take a fascinating comparative approach to the culture, behavior, and cognition of both wild and captive chimpanzees. By seeking new perspectives in how the chimpanzee compares to other species, the scientists featured offer a richer understanding of the ways in which chimpanzees' unique experiences shape their behavior. They also demonstrate how different methodologies provide different insights, how various cultural experiences influence our perspectives of chimpanzees, and how different ecologies in which chimpanzees live affect how they express themselves. After a foreword by Jane Goodall, the book features sections that examine chimpanzee life histories and developmental milestones, behavior, methods of study, animal communication, cooperation, communication, and tool use. The book ends with chapters that consider how we can apply contemporary knowledge of chimpanzees to enhance their care and conservation. Collectively, these chapters remind us of the importance of considering the social, ecological, and cognitive context of chimpanzee behavior, and how these contexts shape our comprehension of chimpanzees. Only by leveraging these powerful perspectives do we stand a chance at improving how we understand, care for, and protect this species.

Pangolins: Science, Society and Conservation brings together experts from around the world to document the most up-to-date scientific knowledge on pangolins and their conservation. It chronicles threats facing the species, explores the current initiatives required to protect them, and looks ahead at the future of pangolin science and conservation efforts. Led by a team of editors with more than 20 years collective experience in pangolin conservation, this book includes accounts of the species' evolution, morphology, and systematics. It discusses the role of pangolins in historically symbolic, mythological, and ritualistic practices across Africa, Asia, and Europe, as well as contemporary practices including international trafficking. Chapters in the latter portion of this book focus on conservation solutions, including law enforcement and international policy, behavior change, local community engagement, ex situ conservation, tourism, and other interventions needed to secure the future of the species. Pangolins: Science, Society and Conservation is the latest volume in Elsevier's species-specific series, Biodiversity of the World: Conservation from Genes to Landscapes. This book is a valuable resource for researchers and students in species conservation science, planning, and policymaking.

The effects of the bone morphogenetic proteins (BMPs) family on bone formation are well documented, but the transforming growth factor (TGF)-beta ( ) isoforms are much less studied. The product of 20 years of study, Induction of Bone Formation in Primates: The Transforming Growth Factor- 3 sums up editor Ugo Ripamonti's research into the osteogenic activity of the three mammalian TGF- isoforms, particularly in primates. It explores how the mammalian TGF- isoforms have the potential to shed light on the apparent redundancy of bone induction signaling. The book unearths the profound and important bone inductive activity of the TGF- 3 isoform. It includes accounts of extensive research in non-human primates from craniofacial tissue regeneration, heterotopic tissue induction, and chapters on periodontal tissue regeneration and synergistic induction of bone formation. It also discusses the future clinical role of the TGF- isoform, including in human studies. This book contributes to the fascinating history of BMP and TGF- research at the intersection of molecular biology, tissue induction, bone regeneration, and craniofacial surgery. It provides a revolutionary awakening to new possibilities in skeletal reconstruction, tissue engineering, and molecular and cellular biology.

Erythrocytes of the Rhesus and Cynomolgus Monkeys addresses the morphologic, quantitative, and generative aspects of the erythrocytes of the rhesus monkey Macaca mulatta and the cynomolgus monkey Macaca fascicularis (long-tailed macaque, crab-eating monkey). These two species are the most commonly selected nonhuman primates for basic science and clinical medical investigations. The hemopoietic cells of man and the rhesus monkey display an intimate homogeneity. Their functional activities are close and at times identical. The cynomolgus monkey was enlisted in biomedical studies at a time when rhesus monkeys were not available in sufficient quantities. It has gained increased use in the Far East and in the Western world. It is, for example, employed in the current development of a vaccine against the deadly Ebola virus. The authors of the book discuss the erythropoietic profiles of normal and abnormal macaques of both sexes and of all age groups as investigated with contemporary electronic methodologies. They cover the role of stress as it is perceived by the monkey and how it impacts erythrocellular values, and how to train the monkey to be a cooperative, unperturbed subject for hematologic study. Additional topics include the role of medication in deriving normal physiologic erythrocellular data, the development of the precursors of the erythrocyte (normoblasts), the morphologic analysis of the megaloblastic series of abnormal erythroid cells, the analysis of erythropoiesis in bone marrow, the relationship of the simian immunodeficiency virus and erythropoiesis, erythrocyte life span, and parasitic invasion of the red cell.

Suppose you were designing a marine mammal. What would you need to think about to allow it to live in the ocean? How would you keep it warm? What would you design to allow it to dive for very long periods to extreme depths? Where would it find water to drink? How would you minimize the cost of swimming, and how would it find its prey in the deep and dark? These questions and more are examined in detail throughout this book. Marine Mammal Physiology: Requisites for Ocean Living is the first textbook focused on how marine mammals live in the sea from a physiological point of view. It explores the essential aspects of what makes a marine mammal different from terrestrial mammals, beyond just their environment. Unlike many publications and books that cover these species from almost all perspectives, this textbook takes a step back to focus on the physiological and biochemical characteristics that have allowed these mammals as a group to exploit effectively the marine environment that is so hostile to humans. The chapter topics are grouped into major themes: diving and locomotion, nutrition and energetics, reproduction, sensory systems, and environmental interactions. Each chapter is arranged around a common perspective and theme: the big picture challenge and summary and what is known specifically by order. To aid you even further, the authors include a "Toolbox" section in each chapter where they discuss the newest methods for understanding and working on the physiology of marine mammals.

Ungulates are an extraordinarily important group of animals worldwide, at many levels - in their remarkable biodiversity; in many cases, as keystone species with a disproportionate effect on the functioning of the wider ecological systems of which they form a part or as dominant species acting as ecological engineers; and as a prey base for endangered or expanding populations of large carnivores. They are also important culturally and economically, as a major source of protein in subsistence cultures and because of their wide exploitation in recreational hunting, which is still a major form of land-use in many countries. A number of aspects of the balance of cost and benefit of ungulates and their management in Europe are considered. Through a synthesis of the underlying biology and a comparison of the management techniques adopted in different countries, management approaches which seem effective within their respective circumstances are explored. Each chapter is written by experts in their own particular field, ensuring that they are aware of the most up-to-date literature on that topic and can also offer an experienced and informed review based on their own research experience.

Monkey see, monkey do or does he? Can the behavior of non-human primates their sociality, their intelligence, their communication really be chalked up to simple mimicry? Emphatically, absolutely: no. And as famed primatologist Julia Fischer reveals, the human bias inherent in this oft-uttered adage is our loss, for it is only through the study of our primate brethren that we may begin to understand ourselves. An eye-opening blend of storytelling, memoir, and science, Monkeytalk takes us into the field and the world's primate labs to investigate the intricacies of primate social mores through the lens of communication. After first detailing the social interactions of key species from her fieldwork from baby-wielding male Barbary macaques, who use infants as social accessories in a variety of interactions, to aggression among the chacma baboons of southern Africa and male-male tolerance among the Guinea baboons of Senegal Fischer explores the role of social living in the rise of primate intelligence and communication, ultimately asking what the ways in which other primates communicate can teach us about the evolution of human language. Funny and fascinating, Fischer's tale roams from a dinner in the field shared with lionesses to insights gleaned from Rico, a border collie with an astonishing vocabulary, but its message is clear: it is humans who are the evolutionary mimics. The primate heritage visible in our species is far more striking than the reverse, and it is the monkeys who deserve to be seen. "The social life of macaques and baboons is a magnificent opera," Fischer writes. "Allow me now to raise the curtain on it."

The much-loved giant panda, a secretive denizen of the dense bamboo forests of western China, has become an icon worldwide of progress in conservation and research. This volume, written by an international team of scientists and conservationists including Chinese researchers whose work has not been available in English, tells the promising story of how the giant panda returned from the brink of extinction. The most important sourcebook on giant pandas to date, it is the first book since 1985 to present current panda research and the first to place the species in its biological, ecological, and political contexts. More than a progress report on a highly endangered species, Giant Pandas: Biology and Conservation details the combination of scientific understanding, local commitment, and government involvement that has been brought into play and asks what more needs to be done to ensure the panda's survival. The book is divided into four parts - Evolutionary History of the Giant Panda, Studies of Giant Panda Biology, Pandas and Their Habitats, and Giant Panda Conservation. It combines the latest findings from the field and the laboratory together with panel and workshop summaries from a recent international conference. Taken together, the chapters highlight how international cooperation has led to better management in the wild and in captivity. The volume also shows how concepts such as buffer zones, links between forest fragments, multiple-use areas, and cooperation with local people who have a stake in the resources - highly relevant concepts for conservation problems around the world - have been key to the panda's survival.

From foraging patterns in a single tree to social interactions across a home range, how primates use space is a key question in the field of primate behavioral ecology. Drawing on the latest advances in spatial analysis tools, this book offers practical guidance on applying geographic information systems (GIS) to central questions in primatology. An initial methodological section discusses niche modelling, home range analysis and agent-based modelling, with a focus on remote data collection. Research-based chapters demonstrate how ecologists apply this technology to a suite of topics including: calculating the intensity of use of both range and travel routes, assessing the impacts of logging, mining and hunting, and informing conservation strategies.

The first ethnographic exploration of the contentious debate over whether nonhuman primates are capable of culture In the 1950s, Japanese zoologists took note when a number of macaques invented and passed on new food-washing behaviors within their troop. The discovery opened the door to a startling question: Could animals other than humans share social knowledge-and thus possess culture? The subsequent debate has rocked the scientific world, pitting cultural anthropologists against evolutionary anthropologists, field biologists against experimental psychologists, and scholars from Asia against their colleagues in Europe and North America. In Chimpanzee Culture Wars, the first ethnographic account of the battle, anthropologist Nicolas Langlitz presents first-hand observations gleaned from months spent among primatologists on different sides of the controversy. Langlitz travels across continents, from field stations in the Ivory Coast and Guinea to laboratories in Germany and Japan. As he compares the methods and arguments of the different researchers he meets, he also considers the plight of cultural primatologists as they seek to document chimpanzee cultural diversity during the Anthropocene, an era in which human culture is remaking the planet. How should we understand the chimpanzee culture wars in light of human-caused mass extinctions? Capturing the historical, anthropological, and philosophical nuances of the debate, Chimpanzee Culture Wars takes us on an exhilarating journey into high-tech laboratories and breathtaking wilderness, all in pursuit of an answer to the question of the human-animal divide.

This book is a comprehensive presentation of health and diseases in reindeer and caribou, or just Rangifer, a key Circumarctic species with broad social and ecological value. It is an essential reference for anyone interested in the biology and health of wild or semi-domesticated reindeer and caribou, and is more broadly relevant for those with interests in other species of free-ranging and captive cervids. Beginning with a general introduction to Rangifer as a species, it then focuses on Rangifer "health" as a concept and describes the determinants of health at an individual and population level. Chapters cover a range of topics from nutrition and feeding to stress, non-infectious and infectious diseases, meat hygiene, capture and restraint, diagnosis and treatment of health issues, and finally, potential impacts of climate change on health of Rangifer. Reindeer and Caribou: Health and Disease compiles extensive research and experience-based information on issues ranging from drug doses for chemical immobilization, blood chemistry values, and raising an orphaned calf. In addition, it contains hundreds of high quality colour illustrations that contribute to its value as a diagnostic resource for recognizing various parasites, pathogens and signs of disease, both in live and dead animals. Each chapter is followed by a comprehensive list of references and a list of contact information for all the contributors, identifying world experts in the different areas of health for this circumpolar and fascinating species. This book is compulsory reading and an indispensable resource for anyone dealing with health in reindeer and caribou, including veterinarians, wildlife biologists and managers, reindeer herders/game ranchers, zoological husbandry personnel, and students with wildlife health.

The remote Gashaka region of north-eastern Nigeria is still largely unexplored. In this premier wilderness, monkeys and apes survive in large numbers -- part of a rich assemblage of wildlife at the interface between the dry sub-Saharan Guinea savannah and the moist Cameroonian highlands. Primates include the rarest chimpanzee subspecies, colobus, guenons and baboons, which thrive here despite the wet climate. The main ethnic groups -- Fulani cattle herders and Hausa speaking subsistence farmers -- still follow age-old traditions. Conservation challenges comprise settlements in protected areas, deforestation, annual fires, livestock grazing and hunting. Primates of Gashaka provides first-hand research accounts in conjunction with the Gashaka Primate Project, founded in 2000. Topics covers primate socioecology; genetics and phylogeography; nutritional ecology; vocal communication and cognition; ethno-botany and ethno-primatology; human subsistence strategies and conflicts with wildlife; as well as habitat surveys assessing success and failure of conservation approaches. The contributions aim for interdisciplinarity and comparative dimensions, across species and the African continent. This pioneering volume about one of the least known iconic primate habitats is of interest to primatologists, anthropologists, policy-makers and conservationists alike.

This book is an up-to-date comprehensive resource on the names (scientific, English and vernacular) of the mammals of South Asia. This work is first of its kind that deals with explanation of names of mammals at the species and subspecies level.

A Practical Guide to the Histology of the Mouse provides a full-colour atlas of mouse histology. Mouse models of disease are used extensively in biomedical research with many hundreds of new models being generated each year. Complete phenotypic analysis of all of these models can benefit from histologic review of the tissues. This book is aimed at veterinary and medical pathologists who are unfamiliar with mouse tissues and scientists who wish to evaluate their own mouse models. It provides practical guidance on the collection, sampling and analysis of mouse tissue samples in order to maximize the information that can be gained from these tissues. As well as illustrating the normal microscopic anatomy of the mouse, the book also describes and explains the common anatomic variations, artefacts associated with tissue collection and background lesions to help the scientist to distinguish these changes from experimentally- induced lesions. This will be an essential bench-side companion for researchers and practitioners looking for an accessible and well-illustrated guide to mouse pathology. * Written by experienced pathologists and specifically tailored to the needs of scientists and histologists * Full colour throughout * Provides advice on sampling tissues, necropsy and recording data * Includes common anatomic variations, background lesions and artefacts which will help non-experts understand whether histologic variations seen are part of the normal background or related to their experimental manipulation

Winner of the Wildlife Society Outstanding Edited Book Award for 2013! Winner of the Texas Chapter of The Wildlife Society Outstanding Book Award for 2011! Winner of a CHOICE Outstanding Academic Title Award for 2011! Biology and Management of White-tailed Deer organizes and presents information on the most studied large mammal species in the world. The book covers the evolutionary history of the species, its anatomy, physiology, and nutrition, population dynamics, and ecology across its vast range (from central Canada through northern South America). The book then discusses the history of management of white-tailed deer, beginning with early Native Americans and progressing through management by Europeans and examining population lows in the early 1900s, restocking efforts through the mid 1900s, and recent, overabundant populations that are becoming difficult to manage in many areas. Features: Co-published with the Quality Deer Management Association Compiles valuable information for white-tailed deer enthusiasts, managers, and biologists Written by an authoritative author team from diverse backgrounds Integrates white-tailed deer biology and management into a single volume Provides a thorough treatment of white-tailed deer antler biology Includes downloadable resources with color images The backbone of many state wildlife management agencies' policies and a featured hunting species through much of their range, white-tailed deer are an important species ecologically, socially, and scientifically in most areas of North America. Highly adaptable and now living in close proximity to humans in many areas, white-tailed deer are both the face of nature and the source of conflict with motorists, home-owners, and agricultural producers. Capturing the diverse aspects of white-tailed deer research, Biology and Management of White-tailed Deer is a reflection of the resources invested in the study of the species' effects on ecosystems, predator-prey dynamics, population regulation, foraging behavior, and browser physiology.

Biological anthropology is a diverse field, with countless research methods and techniques in different sub-disciplines. This book takes a critical perspective to the current state of the field, exploring theory and practice in paleoanthropology, bioarchaeology, and ecology. Contributors challenge how evidence is discovered, collected and interpreted, and explain that researchers gain insights by de-familiarizing themselves from well-known methods and taking a different perspective - 'making the familiar strange'. The book covers how researchers' biases and assumptions affect the interpretation of topics such as human evolution and population movements; race, health, and disability; bodies and embodiment; and landscapes and ecology. A final chapter includes a critical assessment of new thinking about technology, in addition to the multilayered and complex nature of both research questions and evidence. This is an insightful text for researchers and graduate students in anthropology, biology, ecology, history and philosophy of science.

The best-selling animal advocate Temple Grandin offers the most exciting exploration of how animals feel since The Hidden Life of Dogs.
In her groundbreaking and best-selling book Animals in Translation, Temple Grandin drew on her own experience with autism as well as her distinguished career as an animal scientist to deliver extraordinary insights into how animals think, act, and feel. Now she builds on those insights to show us how to give our animals the best and happiest life--on their terms, not ours.
It's usually easy to pinpoint the cause of physical pain in animals, but to know what is causing them emotional distress is much harder. rawing on the latest research and her own work, Grandin identifies the core emotional needs of animals. Then she explains how to fulfill them for dogs and cats, horses, farm animals, and zoo animals.Whether it's how to make the healthiest environment for the dog you must leave alone most of the day, how to keep pigs from being bored, or how to know if the lion pacing in the zoo is miserable or just exercising, Grandin teaches us to challenge our assumptions about animal contentment and honor our bond with our fellow creatures.
Animals Make Us Human is the culmination of almost thirty years of research, experimentation, and experience.
This is essential reading for anyone who's ever owned, cared for, or simply cared about an animal.

Key features Contains 28 updated tables designed as quick, easy-to-use references for New and Old World species Provides over 100 photographs and illustrations, most now in color, depicting aspects of nonhuman primate biology, behavior, management practices, diseases, and technical procedures Gives a concise overview of regulatory considerations for the use of nonhuman primates in biomedical research Expands the Veterinary Care chapter to include new sections on nutritional support, behavioral conditions, dental care, and updated information on anesthetic and analgesic drugs Presents step-by-step descriptions of common and advanced sampling techniques Includes extensive resource lists for vendors of animals, feed, sanitation supplies, caging, anesthetic equipment, and veterinary and research supplies Extensively updated to include current literature, The Laboratory Nonhuman Primate, Second Edition, continues to serve as a quick reference source for technicians, caretakers, veterinarians, researchers, and students working with primates in biomedical research. It provides details on basic husbandry and covers biologic characteristics, regulatory compliance, common diseases, and anesthetic management. The text gives easy-to-follow descriptions of basic technical procedures including restraint, intubation, tuberculin skin testing, and collection of blood and urine samples. It also reviews advanced sampling procedures including collection of bone marrow, cerebrospinal fluid, bronchoalveolar lavage fluid, and rectal mucosal biopsy. The Laboratory Nonhuman Primate presents information in a clear, concise format to allow readers to incorporate concepts and techniques into the standard operating procedures of a facility.

Whales and dolphins are icons for the conservation movement. They are the most conspicuous ambassadors for entire marine ecosystems and possibly even for the biosphere as a whole. Concurrent with our realisation of impending threats to their environment is a growing scientific understanding of the social and cognitive complexity of many of these species. This book brings together experts in the relevant diverse fields of cetacean research, to provide authoritative descriptions of our current knowledge of the complex behaviour and social organization of whales and dolphins. The authors consider this new information in the context of how different human cultures from around the world view cetaceans and their protection, including attitudes to whaling. They show how new information on issues such as cetacean intelligence, culture and the ability to suffer, warrants a significant shift in global perceptions of this group of animals and how these changes might be facilitated to improve conservation and welfare approaches.

Estuarine and coastal waters are acknowledged centres for anthropogenic impacts. Superimposed on the complex natural interactions between land, rivers and sea are the myriad consequences of human activity - a spectrum ranging from locally polluting effluents to some of the severest consequences of global climate change. For practitioners, academics and students in the field of coastal science and policy, this timely book examines and exemplifies current and future challenges: from upper estuaries to open coasts and adjacent seas; from tropical to temperate latitudes; from Europe to Australia. This authoritative volume marks the 50th anniversary of the Estuarine and Coastal Sciences Association. Drawing on the expertise of more than 60 specialist contributors, individual chapters address coastal erosion and deposition; open shores to estuaries and deltas; marine plastics; coastal squeeze and habitat loss; tidal freshwaters - saline incursion and estuarine squeeze; restoration management using remote data collection; carbon storage; species distribution and non-natives; shorebirds; Modelling environmental change; physical processes such as sediments and modelling; sea level rise and estuarine tidal dynamics; estuaries as fish nurseries; policy versus reality in coastal conservation; developments in estuarine, coastal and marine management. In addition to providing an overview of current scientific understanding, the material gathered here offers a clear-eyed perspective on what needs to be done to protect these fragile - and vital - ecosystems.

Since the release of the documentary Blackfish in 2013, millions around the world have focused on the plight of the orca, the most profitable and controversial display animal in history. Yet, until now, no historical account has explained how we came to care about killer whales in the first place. Drawing on interviews, official records, private archives, and his own family history, Jason M. Colby tells the exhilarating and often heartbreaking story of how people came to love the ocean's greatest predator. Historically reviled as dangerous pests, killer whales were dying by the hundreds, even thousands, by the 1950s-the victims of whalers, fishermen, and even the US military. In the Pacific Northwest, fishermen shot them, scientists harpooned them, and the Canadian government mounted a machine gun to eliminate them. But that all changed in 1965, when Seattle entrepreneur Ted Griffin became the first person to swim and perform with a captive killer whale. The show proved wildly popular, and he began capturing and selling others, including Sea World's first Shamu. Over the following decade, live display transformed views of Orcinus orca. The public embraced killer whales as charismatic and friendly, while scientists enjoyed their first access to live orcas. In the Pacific Northwest, these captive encounters reshaped regional values and helped drive environmental activism, including Greenpeace's anti-whaling campaigns. Yet even as Northwesterners taught the world to love whales, they came to oppose their captivity and to fight for the freedom of a marine predator that had become a regional icon. This is the definitive history of how the feared and despised "killer" became the beloved "orca"-and what that has meant for our relationship with the ocean and its creatures.

In the songs and bubble feeding of humpback whales; in young killer whales learning to knock a seal from an ice floe in the same way their mother does; and in the use of sea sponges by the dolphins of Shark Bay, Australia, to protect their beaks while foraging for fish, we find clear examples of the transmission of information among cetaceans. Just as human cultures pass on languages and turns of phrase, tastes in food (and in how it is acquired), and modes of dress, could whales and dolphins have developed a culture of their very own? Unequivocally: yes. In The Cultural Lives of Whales and Dolphins, cetacean biologists Hal Whitehead, who has spent much of his life on the ocean trying to understand whales, and Luke Rendell, whose research focuses on the evolution of social learning, open an astounding porthole onto the fascinating culture beneath the waves. As Whitehead and Rendell show, cetacean culture and its transmission are shaped by a blend of adaptations, innate sociality, and the unique environment in which whales and dolphins live: a watery world in which a hundred-and-fifty-ton blue whale can move with utter grace, and where the vertical expanse is as vital, and almost as vast, as the horizontal. Drawing on their own research as well as a scientific literature as immense as the sea--including evolutionary biology, animal behavior, ecology, anthropology, psychology, and neuroscience--Whitehead and Rendell dive into realms both humbling and enlightening as they seek to define what cetacean culture is, why it exists, and what it means for the future of whales and dolphins. And, ultimately, what it means for our future, as well.

European Whales, Dolphins, and Porpoises: Marine Mammal Conservation in Practice presents an intimate view of the workings of international conservation agreements to protect marine mammals, detailing achievements over the last 25 years, identifying weaknesses and making recommendations that governments, scientists, marine stakeholders and the public can take to improve conservation efforts. The book is written by an experienced marine mammal scientist and award-winning conservationist, providing a unique synthesis on their status, distribution and ecology. In addition, it presents information on various conservation threats, including fisheries by catch, contaminants, noise disturbance, plastic ingestion and climate change. This comprehensive resource will appeal to marine mammal conservationists and researchers, as well as environmental and wildlife practitioners at all levels.

Among all the large whales on Earth, the most unusual and least studied is the narwhal, the northernmost whale on the planet and the one most threatened by global warming. Narwhals thrive in the fjords and inlets of northern Canada and Greenland. These elusive whales, whose long tusks were the stuff of medieval European myths and Inuit legends, are uniquely adapted to the Arctic ecosystem and are able to dive below thick sheets of ice to depths of up to 1,500 meters in search of their prey-halibut, cod, and squid. Join Todd McLeish as he travels high above the Arctic circle to meet: Teams of scientific researchers studying the narwhal's life cycle and the mysteries of its tusk Inuit storytellers and hunters Animals that share the narwhals' habitat: walruses, polar bears, bowhead and beluga whales, ivory gulls, and two kinds of seals McLeish consults logbooks kept by whalers and explorers and interviews folklorists and historians to tease out the relationship between the real narwhal and the mythical unicorn. In Colorado, he visits climatologists studying changes in the seasonal cycles of the Arctic ice. From a history of the trade in narwhal tusks to descriptions of narwhals' vocalizations as heard through hydrophones, Narwhals reveals the beauty and thrill of the narwhal and its habitat, and the threat it faces from a rapidly changing world. Watch the trailer: http://www.youtube.com/watch?v=gHwaqdKyLCQ&list=UUge4MONgLFncQ1w1C_BnHcw&index=9&feature=plcp