Killer whales have 48 to 52 teeth in total on their top and bottom jaws. Their teeth reach up to 4 inches long. Although they have teeth, they do not chew their food. More »

Predators of humpback whales include orcas (killer whales) and humans. Killer whales are not always successful in their attacks, which is why many humpback whales bear scars from orcas' teeth. More » Pets & Animals Mammals Marine Mammals

Gray whales eat a wide variety of crustaceans, such as ghost shrimp and amphipods, along with many other organisms, including polychaete worms, herring eggs and animal larvae. They feed off the ocean bottom, sucking in a... More » Pets & Animals Mammals Marine Mammals

Killer whales, also called orcas, are conceived via sexual reproduction between a sexually mature bull and a cow in estrus. The gestation period is approximately 17 months, at the conclusion of which a calf typically mea... More »

Killer whales eat a wide range of large animals, including seals, sea lions, smaller whales, bony fish, sharks, cephalopods, sea turtles and otters. They are the apex predators of the oceans, swallowing smaller prey whol... More » Pets & Animals Mammals Marine Mammals

Killer whales sleep by floating motionlessly in the water for a period of 5 to 8 hours. Captive orcas may sleep by resting on the bottom of the pool or floating near the surface. More »

Killer whales make a variety of sounds in different ways, including clicks used for echolocation, long whistles, pulsating calls, low-frequency pops and noise by clapping their jaws. These sounds are likely used to help ... More »