1) Black American slang for ears 2) Fins 3) Flipper 4) Seal features 5) Shoe 1) Fins 2) Flipper 3) Forelimbs 
In cetaceans, the forelimbs.
In cetaceans, the forelimbs. 
Flippers is Black-American slang for ears
Paddlelike forelimbs that help a whale steer through water.
Flippers are the front “paddles” of dolphins and are also called pectoral fins. They have evolved from front limbs, much like our arms and now help dolphins to balance and steer.