Matching Pairs dolphins parts of bodyOnline version 11th grade dolphins by lyubanya9288 1 fluke 2 ear 3 blowhole 4 dorsal fin 5 melon 6 pectoral fins 7 rostrum 8 peduncle the two fins located on the sides of a fish (or marine mammal) 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 powerhouse of the body, located between the dorsal fin and tail flukes one of the two parts that a dolphin's tail is divided into the organ that enables hearing and (in mammals) body balance using the vestibular system