To capture an image of the crystal octopus, one of the ocean's rarest and most elusive creatures, became the ultimate goal in Ali bin Thalith's obsession with underwater marine photography. Over ten years of searching has produced cornucopia of extraordinary deep sea images, of which 100 are selected here, shot in the warm waters of the Indian and Pacific Oceans. From Swimming with Giants to the God of Small Things, six chapters portray the inspirational qualities of marine life. Large mammals such as sharks, shoals of tuna, swimming antelope and elephants shot from below are truly exceptional. The microscopic creatures that camouflage themselves so expertly from their predators, coral gardens of the ocean bed, night dive images and the highly decorative patterns found on so much of marine life, provide a sourcebook not just for marine photography enthusiasts, but for everyone interested in colour, pattern and texture. Care is taken to explain the practicalities of the dive, the shoot, or the location and the author willingly shares the difficulties and the techniques of striving to achieve that perfect image.

From swimming alongside our kayaks, canoes, coracles and boats to lurking alone in the shadowy waters of remote seas, seals have long interacted with humans and played a part in our history. Seal by Victoria Dickenson explores the natural and cultural history of an animal that has piqued and delighted human interest since ancient times, from their role in Roman spectacles to their frequent inhabitation of animal rescue centers today.Seals, sea lions, fur seals and walruses are so distinctive that biologists have classified them as members of a single order, the Pinnipedia, yet our relationship with each distinctive seal species varies. We have for centuries hunted some seals for their skin, oil and meat. In the twentieth- and twenty-first century the hunt has become a focus for global protest, and the white-furred baby seal has evolved into one of the most powerful symbols for animal welfare. Some species, like the Mediterranean monk seal, are among the most endangered mammals in the world. Others, who live far from human habitation, number in the millions.The seals living closer to our societies have become wrapped in our myths and legends: there are tales of seals who have sought out human society, following the sound of children's voices, or the music of the pipe and flute; and there are darker stories of selkies and other seal-like creatures that take on human shape for purposes of both good and ill. Richly illustrated and accessibly written, Seal offers an immersive view of a much-loved, storied creature.