CATDOLL : CATDOLL: How to tell the difference between squid, octopus and cuttlefish?

How to tell the difference between squid, octopus and cuttlefish?

Some of them will crawl up your trouser legs, which is a bit annoying. Octopuses are the easiest to distinguish. They only have eight claws, so they are called eight-clawed ones. The other two have ten claws. Octopuses are small and have round heads. Their eight claws are close to the ground because they crawl on the seabed, while the other two swim in the sea. Octopus meat is very chewy. The main thing to look at is the appearance. The body of an octopus is sac-shaped and looks like a meatball. The body of a squid is long and narrow, like a tube, and the cross section is ring-shaped. The body of a cuttlefish is relatively flat and wide. You can also look at the head. The head of a cuttlefish is long and round, that of a squid is long and pointed, and that of an octopus is short and round.

Squid is also a soft-bodied animal, and like the cuttlefish, it has 10 tentacles. It has a slender body, a pair of large fins, and nicknames such as lock tubes and hair tubes in many places. The overall shape is like the tip of a red tasseled spear, so it is also called a squid. The inner shell has degenerated and only a transparent keratin sheet remains. First of all, squid is also called cuttlefish. They are a kind of creature, because "black" and "ink" both describe that when it is threatened, it will spray black ink to protect itself. Similarly, octopus and octopus are also creatures, because they have eight claws, so they have this nickname.

There is a pair of spoon-shaped tentacles with four rows of suckers on them. The ink sac in the body is well developed, and it releases ink and escapes when it encounters an enemy. In addition, the reproductive glands of male squids can be processed into dried products, called cuttlefish spikes or mullet spikes, and the dried products of the egg-wrapped glands of female squids are called "mullet eggs" or "cuttlefish eggs". In fact, it is not a fish, but a mollusk living in the ocean. In taxonomy, squid belongs to the phylum Mollusca, the class Cephalopoda, the subclass Dibranchia, and the order Decapoda. Squids have two gills as respiratory organs; the body is divided into a head, a very short neck, and a segmented trunk. There is a pair of well-developed eyes and tentacles around the mouth on both sides of the head.

It is easy to confuse. Squid belongs to the order Cephalopoda and has a different appearance. Squid has a slender body and a pointed conical tail. Cuttlefish has a wider body and a relatively oval tail. They feel different. Cuttlefish has hard bones in its body and feels harder. Squid has only a transparent membrane in its body and feels softer. Both squid and cuttlefish can be eaten.

Cuttlefish: The head is well-developed, with a pair of large eyes, and the top of the head is the mouth. There are 8 arms and 2 long tentacles around the mouth. There are 4 rows of suckers at the front of each arm, and there are more suckers on the tentacles. Squid: The body is cone-shaped, pale with light brown spots, with 10 tentacles in front of the head, and the fleshy fins at the tail end are triangular. Octopus: The body is oval or oval, with strong muscles, large compound eyes and 8 retractable arms on the head, each with 2 rows of fleshy suckers.

In terms of body shape, octopus is ball-shaped, cuttlefish is bag-shaped, and squid is cone-shaped. Squid and cuttlefish are very similar, but generally speaking, the squid is much larger than the cuttlefish, and there is a lot of ink on fresh cuttlefish. The squid body is pink and strong, while the cuttlefish is whiter. The most obvious difference between octopus and squid is that there is a small piece of fin-like thing on each side of the squid's head to maintain balance. The squid head is larger than the octopus's head. In addition, there is a small amount of cartilage in the squid's body, so it is more stylish than the octopus and has a more fixed shape.

1. Different body structures Octopus has eight arms, while squid and cuttlefish have ten arms. Octopus has a soft body, squid has cartilage, and cuttlefish has hard bones. 2. Different appearance When we see octopus, we can think of octopus balls - its body is sac-shaped, like balls; squid has a narrow and long body, and the cross-section is circular; the body of cuttlefish is relatively flat and very wide. Then we look at their heads. The head of cuttlefish is long and round, the head of squid is long and pointed, and the head of octopus is short and round. 3. As the name suggests, there is a lot of ink in the head of cuttlefish, while octopus and squid do not have ink.

How to distinguish between octopus, cuttlefish, squid, octopus, and cuttlefish?

Category: Education/Science >> Science and Technology

Problem description:

Thanks!

Analysis:

Squid and cuttlefish are very similar, but generally speaking, the squid we see is much larger than the cuttlefish, and fresh cuttlefish will have a lot of ink. The squid's body is round pink and strong, while the cuttlefish is relatively white.

The most obvious difference between an octopus and a squid is that the squid has a small fin-like thing on each side of its head to maintain balance. The squid's head is much larger than the octopus's head. In addition, there is a small amount of cartilage in the squid's body, so it is more stylish than the octopus and has a more fixed shape.

Octopus is octopus, and cuttlefish is squid, they are just aliases.

I think the guy above has a problem with his answer, because it is impossible for a giant squid to go to shallow waters to forage for food. All the giant squids found in the world floated up after death.

It is adapted to the dark world of the deep sea, and has eyes with a diameter of one foot and its pupils cannot adjust. Once it rises to the shallow sea, the strong light will make it blind immediately.

In addition, because it lives in the deep sea, its body produces an amine substance and stores it in the muscles in order to adapt to the huge water pressure. If the pressure changes too much, it will be released. But this substance is poisonous, so once the king squid floats up, it will definitely die. The skin of the king squid can glow, mainly for hunting, but the light is not particularly bright, and it can't stand it. Because of its huge size and the depth it lives in, there is no creature that can threaten its survival except sperm whales.