Squid King is one of the largest invertebrates known in the world, and also the second largest squid in the world (the first is giant squid, that is, squid with king sour pulp, which is generally 2-3 meters larger than squid King, and the rest is 4-5 meters), with a body of 18-2 meters. Generally, the juvenile king squid is 8-1 meters long, the adult king squid can be as long as 2 meters, and the largest king squid can grow to 8 meters or even longer, weighing 5 tons. Their eyes are surprisingly large, with a diameter of about 35 cm; The diameter of the sucker is also above 8 cm. The king squid lives in the deep sea, rests in the deep sea during the day, swims to the shallow sea for food at night, feeds on fish, and can catch prey in the dark sea. It often fights to the death with sperm whales that dive into the deep sea for food. Sperm whales are often scarred, but the remains of king squid have been found in their stomachs. People haven't seen the king squid staying in its habitat. People can only learn some information about these animals through those giant squid that float to the surface of the sea or are washed ashore by the sea after death or injury. The body is cone-shaped, the back is suddenly thin and narrow, the length of the trunk is about 4 times of the width of the trunk, and there are nearly round pigment bodies with the same size on the body surface. The fleshy fin is short, and the length of the fin is about 1/3 of the length of the trunk. The back of the two fins are slightly peach-shaped, without prophase drooping, and the fins are connected with the jacket. The myofilament of the oral membrane is connected with the dorsal margin of the fourth pair of wrists. The first wrist is shorter, the other three pairs of wrists are longer and similar in length, and the wrist pose is generally 3? 2? 4? 1； The length of wrist 2-4 is about 4/5 of the length of the trunk, and there are two rows of wrist suction cups, and the horny ring in the suction cups has teeth; The fourth pair of male wrists is stylized, and the top sucker is specialized into two rows of fleshy processes. Touching the wrist is very prolonged, about 2.5-4 times the length of the wrist; Wrist-touching spikes are slender, with 4 rows of suckers, which can be divided into obvious carpal bones, palms and fingers; Two rows of suction cups in the middle of the palm are enlarged, and the suction cups have sharp teeth; There are dense clusters of suckers in the carpal bones, with 6-7 rows of suckers interspersed with hemispherical bulbous processes; The wrist-touching handle is provided with pairs of alternately arranged sucker and bulbous processes, which are arranged gradually from near to far. The inner shell is needle-shaped, the blade axis is thick, the ribs on the blade axis are thin, and the back end of the inner shell has a hollow narrow longitudinal rhomboid coccyx. No light emitter. The maximum length of the trunk is 6m, the total length is mostly 6-12m, and the maximum length is 2m. The maximum weight is 1kg (quoted from Cephalopods in the world, published in January 29).