It is a small toothed whale that lives in the Arctic region. Known for its male specific long and straight teeth (often referred to as "horns"), which are actually a front tooth on its left upper jaw. The body length is usually between 3 and 5 meters, and the weight can reach 1000 kilograms. Mainly preys on fish and squid, sometimes also preys on other marine mammals. Widely distributed, found in cold waters from the North Atlantic to the North Pacific. It is a social animal that often forms groups of tens to hundreds of individuals. This whale not only has a unique appearance, but also has interesting behavioral habits, such as sometimes jumping on the sea surface, demonstrating amazing flexibility.

It is a mammal belonging to the family Ophthalmidae in the order Cetiformes. The body shape is very unique, with a white belly and a black back mixed with blue gray or black gray spotted patterns. The head has a long horn of about 1-2 meters, a small and round head, no protruding beak, protruding forehead, and small and wide pectoral fins, but short in length. Named after a "horn" growing on the head. Distributed in the Russian waters of the Atlantic and Arctic Oceans, inhabiting the Arctic Circle waters. The main food is fish or mollusks. Due to their extreme picky eating habits and unchanging migration routes, they face a high risk of being hunted by humans, resulting in a decreasing population.

The unicorn whale is a deep-water animal in the family Characidae of the order Cetiformes. It has a small and round head, an indistinct beak, a protruding forehead, and a slight upward tilt in front of its mouth. Most male unicorn whales will grow a long tooth from the left side of their upper jaw after the age of one, which is called a unicorn whale because it resembles the horn of a wild animal; Most female whales do not have teeth. Unicorn whales mainly live in the northern end of the Atlantic Ocean and the Arctic Ocean, and have also been found in small quantities in the Greenland Sea, mostly living north of the Arctic Circle. Unicorn whales are social animals, and there are strict boundaries between populations. The food of unicorn whales includes flatfish and Arctic cod. The biggest natural enemy of unicorn whales is humans.