Page-turning, fact-based fiction for independent readers, inspired by real-life OceanX explorers and discoveries Marena Montoya is learning how marine mammals talk to each other. But her bigger challenge is learning how to communicate with her new study partner, Samuel, as sea mammal rescues—and their own lives—will depend on it. A baby sea otter and a dolphin need Marena and Samuel’s help, but when the team investigates strange sounds under the ocean, they become the ones in need of rescue. Trapped and in trouble, can Marena and Samuel escape on their own? Or will they need a little help from a sea mammal friend?

Dive into an OceanX Adventure! Junior journalist Marena Montoya and her BFF Aisha use critical thinking, curiosity, and serious science to get to the bottom of strange goings-on at the aquarium and beyond! I felt the goose bumps rise on my arms. Could I really be seeing this? I didn't know whether to run and hide...or stay to say hello. What's causing a mysterious power outage at the local aquarium? Best friends and curious 5th-grade conservationists Marena and Aisha have an exciting theory. Following the advice of their OceanX mentor, they search for real scientific evidence, and embark on a fact-finding mission that leads to some spooky sleuthing. Are they on the verge of an out-of-this world discovery? Or did their imaginations go entirely too far? This page-turning adventure combines the scientific discoveries of the world-renowned OceanX project with an intrepid new heroine who learns the power of speaking up, asking questions, and learning from mistakes. MEET THE OCEAN EXPLORERS: 5th-grade junior journalist Marena, her BFF Aisha, and Marena's teenage brother Lucas use critical thinking and sound science to solve mysteries at the aquarium and beyond. MENTORED BY OCEANX: Marena and Aisha are mentored by Dr. Anna Knowles, whose character is inspired by the real-life scientists of the world-renowned OceanX project. REAL SCIENCE: Each mystery is based on actual oceanic science research and discoveries, and is filled with fascinating facts about the ocean world. MIDDLE-GRADE MILESTONES: Once proud of her curiosity and endless questions, 11-year-old Marena is starting to feel self-conscious about calling attention to herself. With the encouragement of her teacher and mentor, she learns to embrace the qualities that make her special. COLLECT THE SERIES: Deep Sea Danger also available!