What is the difference between squid and cuttlefish?

Squid and cuttlefish are very similar, but generally speaking, the squid you see is much bigger than cuttlefish, and there is a lot of ink on fresh cuttlefish. Squid powder is tender and firm, and cuttlefish is whiter.

The most obvious difference between octopus and squid is that squid has a small fin on each side of its head to keep balance. The proportion of squid head in the body is much larger than that of octopus. In addition, squid has a small amount of cartilage, so it is more shaped and relatively fixed than octopus.

Octopus is octopus, squid is squid, just an alias.

I think there is something wrong with the people upstairs. King squid can't feed in shallow water. All the giant squid found in the world will float up after death.

It adapts to the dark world of the deep sea. Its eyes are one foot in diameter and its pupils cannot be adjusted. Once it rises to the shallow sea, strong light will make it blind immediately.

In addition, because of living in the deep sea, its body will produce an amine substance to adapt to the huge water pressure and store it in muscles. If the pressure changes too much, it will be released. But this substance is poisonous, so once the king squid comes up, it will definitely die. The skin of the king squid glows, mainly for predation, but the light is not particularly bright, and I can't stand it when it is bright. Because of their huge size and depth, nothing can threaten their survival except sperm whales.