This document summarizes different animals found in water, including whales and dolphins that eat small fish and plankton, seals that can stay underwater for 40 minutes, sharks known as predators with sharp teeth, and large manta rays that fly through water like birds through air. Whales live in cold water while dolphins are found in oceans and rivers. Seals come in two types - eared seals and true seals - and have adaptations for swimming and breathing air at the surface. The great white shark can grow over 20 feet long and is the most dangerous species.