Squid with sour sauce lives in the far south sea, which is distributed in the waters around the Antarctic continent in the south, and occasionally to the north and the coast of South Africa. It is about 5 meters long and weighs about half a ton. Different from the king squid, the sucker of the king squid is attached with sharp barbs, which are about 3 cm long and extremely fierce and difficult.

King squid is a typical giant squid from deep sea and Leng Hai, and it is the largest of its kind. It is not only bigger than the king squid, but also a more active predator. It has beautiful huge round fins and the largest eyes in the world, which are as big as a football, but their brains are very small, only 30 grams, which is human 1/70. It is round, and the esophagus passes through it. Interestingly, when they swallow something bigger, it will cause damage to the brain. It has the largest "beak" among squid, so it is no problem to easily crush bones. They have small otoliths in their ears to tell the direction. There are circles on it, similar to annual rings. A circle represents a day. The king squid grows fast and dies fast. Their life span is only about 450 days. Their blood is blue, and their anus passes under their cheeks. They have eight brachiopods and two tentacles. The long one is the tentacle and the short one is the brachiopods. Brachiopods have barbs that can rotate 360 degrees, which are similar to tiger's claws and can be as long as 8 cm, so they can easily cut a wound 2 inches deep in whale fat.

There are only a few complete individual samples, but they are all juvenile giant squid, so so far, scientists can only estimate that the adult king squid is about 15 meters long based on these samples, and the real long and big squid has not been found.