Matching Pairs dolphins parts of bodyOnline version 11th grade dolphins by lyubanya9288 1 peduncle 2 melon 3 pectoral fins 4 dorsal fin 5 ear 6 rostrum 7 blowhole 8 fluke the organ that enables hearing and (in mammals) body balance using the vestibular system one of the two parts that a dolphin's tail is divided into a term used in anatomy for several kinds of hard, beak-like structures projecting out from the head or mouth of an animal a structure located in the forehead of dolphins that is thought to play a key role in their echolocation abilities a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom the hole through which a dolphin breathes the two fins located on the sides of a fish (or marine mammal) the powerhouse of the body, located between the dorsal fin and tail flukes