Dive into an OceanX Adventure! Marena Melendez and her BFF Aisha go on a brand new ocean adventure using their scientific skills to solve another mysterious puzzle.

Science reporter and self-described junior detective Marena Rodriguez has discovered an important clue about a treasure-laden Spanish ship lost at sea centuries ago.

As a land-locked (and clueless!) treasure hunter, Marena has no idea how she might influence the search for the ship until a wild series of events lands her, and her older brother Lucas, straight in the hunt.

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 exciting ocean mysteries.

MENTORED BY OCEANX: Maena and Aisha are mentored by Dr. Diaz, who 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 facts, and is filled with fascinating information 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: [title of 3rd book] also available!

Kate B. Jerome is an award-winning author who has written more than 100 science books for children, including a NYT bestseller. A lifelong science literacy proponent with a special interest in ocean conservation, she is a Director Emeritus of the South Carolina Aquarium.