What kind of animals are called "ice beauties in water" and live in Arctic waters?

Beluga whales living in Arctic waters are called "ice beauties in water". Beluga whales live in the Arctic and subarctic regions, and also inhabit the northern and eastern waters of Russia. They are relatively large, 4-6 meters long and weighing 2000-4000 kilograms. Adult male beluga whales have chubby bodies, white skin and round foreheads. _ has a big "tumor" on each side, an open mouth, a pair of small eyes, and a pair of flippers on both sides of the body like paddles. From the front, Moby Dick looks like an old girl on her birthday. Every July, the ice and snow melt, and thousands of beluga whales begin their summer vacation. They swam to summer resorts-bays, estuaries, deltas and rivers. After August 20, they ended their summer vacation and returned to the ocean to prepare for the winter. Molting is a great pleasure of Moby Dick's summer vacation. In midsummer, the water temperature in Mobidick Summer Resort is unexpectedly warm, which is really an ideal place for Mobidick to bathe, molt and raise young. According to the witness of scientists and whalers, many beluga whales looked very dirty and covered with parasites when they first swam to the summer resort. After some beluga whales dive into the water, people can hear the sound of rubbing sand and stones from the hydrophone. Other beluga whales like to scratch on the sand and gravel on the shallow beaches in the delta. People can see them rolling for hours at a time. In this way, after a few days of friction, all the old skins of the beluga whale fell off and were replaced with clean ivory new skins, which were both beautiful and comfortable. Source: the second classroom (junior high school edition)