The front limbs on a dolphin are called flippers. The bones inside the flippers are similar to the bones inside your arm and hand. … There are no bones in a dolphin’s flukes, just tough connective tissue. The dolphin uses its flukes for swimming and its flippers for steering.

Did dolphins have arms and legs?

Instead of arms and legs, dolphins have fins. The dorsal fin helps the dolphin maintain stability. The pectoral fin is used for steering and movement. Each tail fin is called a fluke.

Do dolphins have knees?

Example posted here. Beluga whales (and other modern whale & dolphin species) don’t have knees at all. During their evolution, cetaceans (whales & dolphins) completely lost their hind limbs; today, a pair of tiny bones is all that remains of the pelvis.