killer whales are a kind of whales. Broadly speaking, all species of cetacean can be called whales, but people are used to calling the big ones whales and the small ones dolphins. Although larger than most dolphins, killer whales have not yet reached the level of whales, and their classification belongs to Dolphinidae, so they are different from whales known by people. There is another difference, that is, dolphins can locate in three dimensions by sound waves, while large whales do not have this ability.

1. Migration: Killer whales at high latitudes will migrate long distances. In Antarctica, some ecotypes of killer whales enter ice floes in search of prey, while others hunt in the open air. In some places, killer whales also migrate seasonally, gathering in coastal waters for food, and occasionally entering estuaries.

2. Colony: Killer whales are highly social animals and like to live in groups, usually with small groups of 2-3 animals and sometimes even large groups of 40-50 animals. Usually a population will have 20% mature males, 20% young whales, and 60% females and immature males. Killer whales can also teach their offspring how to hunt.

3. Swimming: Killer whales can swim 160 kilometers a day. In the shallow waters of the bay, they like to hook and pull seaweed with their tails. Its fastest speed can reach 55 kilometers per hour. It is curious about ships and occasionally runs aground or gets trapped in the bay.