Locomotion
Killer whales have a very powerful tail fin which is known as the Flukes. This fin allows the killer whales to move forward. The tail flukes also provide dolphins with good power for swimming and jumping out of the water. The flippers on their sides are used for stabilization. Killer whales can swim up to 30 km/h, which is made easy by the shape of their bodies. Killer whales have a very streamlined body which is shaped like a torpedo. This shape reduces the degree of resistance from the water passing over the dolphins body as it swims. Killer whales are expert divers as well and they can reach depths of more than 300 metres during a single dive.