Join Seymour Simon, the "dean" of children's science nonfiction, as he investigates the most extreme environments, animals, plants, and weather in the ocean. Imagine exploring the most extreme parts of our amazing oceans--riding the tallest waves, diving to the darkest depths, and encountering the largest and most dangerous sea creatures on Earth. These mind-bending facts and stunning photographs make for an exciting, and sometimes unbelievable, underwater expedition!