White whales are a type of cetacean, which is a marine mammal. The most well-known white whale is the beluga, which is a species of whale that lives in the Arctic and sub-Arctic regions. Belugas are easily recognizable due to their distinctive white color and rounded heads. They are also known for their vocalizations, which can be heard above and below the water. Belugas are social animals and live in pods of up to 10 individuals. They feed on a variety of fish, crustaceans, and mollusks.