Whales

Whales are large, intelligent, aquatic mammals. They breathe air through blowhole into lungs (unlike fish who breathe using gills). Whales have sleek, streamlined bodies that move easily through the water. They are the only mammals, other than manatees.Whales are that mammals live their entire lives in the water, and the only mammals that have adapted to life in the open oceans.
The biggest whale is the blue whale, which grows to be about 94 feet (29 m) long - the height of a 9-story building. These enormous animals eat about 4 tons of tiny krill each day, obtained by filter feeding through baleen. Adult blue whales have no predators except man.These are the biggest mammals live till now.It is said that whales sometimes attacks ships but actually their size is so big that they are playing with floating ship but it is so big that it helps to shrunk the ship and make the accident of it.