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Jonathan travels to New England to learn about lobsters, then he investigates remoras, otherwise known as shark suckers. Finally he travels to Grand Cayman to team up with renown artist Dr. Guy Harvey to learn about stingrays.
Jonathan travels the world to learn about sea stars (starfish), investigates the real world of Anemonefish, and finally performs an experiment to see if sharks really form feeding frenzies.
Jonathan visits an island in Malaysia to learn about sea turtles. Then he investigates mangrove forests, and finally seeks out wolffish on both the east and west coast of the USA.
Jonathan visits the New England Aquarium as a volunteer aquarist for a day to learn what it takes to care for thousands of fish. Then he films spawning Mandarinfish and witnesses an incredible secret ritual. Finally he gets up close to the massive whale shark-the world's largest fish in Mexico.