Each section begins with an infographic map of the ocean it explores—Atlantic, Pacific, Indian, Southern and Arctic—followed by richly detailed two-page spreads exploring its depths and the denizens within, as well as seabirds, coral reefs and shoreline critters. Discover saltwater crocodiles lurking in the Andaman Islands, hammerheads gathering in the Atlantic, and the awe-inspiring colossal squid that calls the Ross Sea home.