The dorsal fin, and it's used to stabilize the dolphin while it's swimming.
The fin on the bottom of a dolphin is called a pectoral fin
A dorsal fin, (or top fin), is used to steer the dolphin, and to help it balance.
A dolphin's fin is rounded at the top, but a shark's fin is straight
at the end of the dolphins "tail" is called a fluke
The fin on the top/back of all fish is called the "Dorsal Fin."
When it's a dolphin.
The shortest dolphin, the Tucuxi dolphin, grows to about 4.9 feet in length and about 1 foot top of the fin to belly, while the largest, the Killer Whale, can grow up to 26 feet long, with a top to bottom height of about 12 feet counting the dorsal fin.
It is called a dorsal stripe, like a dorsal fin on a dolphin.
The dorsal fin of a dolphin is usefu,l because it can control the balance when a dolphin is swimming.It can also be useful for signs of dolphins and not sharks because the dorsal fin of a dolphin and a shark is slightly different.
Its front fins are used to steer the dolphin through the water. The dorsel fin helps so the dolphin does not roll while swimming.
The tail fins are 'flukes'. Otherwise the fin on any marine animal is "... fin" where "..,." is the adjective denoting its position on the body.
dorsal fin?
tail,fin,and dusel fin