Delphinapterus leucas<br><br>Beluga or "white
whales" are not born white. They are grey at birth and
get lighter and lighter until at about age six they
are completely white. Belugas are one of the three
whales that spend all their lives in arctic waters. The
other two are the bowhead and the narwhal. Beluga are
special among all whales because they can turn their
heads. Maybe this is so that they can communicate with
each other better! Beluga are very social and make a
wide variety of sounds. A group of beluga can be loud!
They have been nick-named "sea canaries." Beluga use
sound to help them find their prey. They send out a
sound which bounces off things in the water and allows
them to hear how far away something is. This is called
"echolocation." Beluga will work together using this and other
techniques to herd fish into shallow water. It has also been
reported by native people that beluga whales help each
other give birth! They use many subtle forms of
communication including a wide variety of facial expressions.
Unlike some other whales, beluga have good vision.What
they don't have is a dorsal fin, earning them the name
"delphinapterus" or dolphin-without-a-wing.