They are mammals because they feed their babbies milk. Orcas Whales, Orcas, and Dolphins see underwater when the light is good. When its all blurry underwater they can't see very well. When they can't see very well they rely on hearing, feel, and echolocation. Raccoons Raccoons are small animals with long bushy tails and their front paws that they use like hands.
Raccoons often search for food along stream banks.
Many animals may not need water in thier enclosures, but do enjoy the occasional swim. The tiger enclosures at Howletts zoo contains pools that the tigers can swim in during the summer.