How to identify mollusc sea creatures such as octopus, squid, squid, etc.?

What is the difference between squid, octopus, squid?

These three are easily recognizable from their appearance.

The octopus's head is large, round, and its tentacles are outward.

The shape of squid and squid is slender and oval, and there is a hard bone on the back of the squid, which can be felt with your hands, and it has medicinal use**.

Squid, on the other hand, only has soft bones and is soft throughout.

I believe that many people have eaten squid, especially grilled squid, which is loved by the public. There is a fish character in the name of the squid, and it is a creature that lives in the water, so many people are curious about whether the squid in the ocean is a fish? In fact, the squid is not with, it belongs to the mollusk phylum Cephalopoda Decabrachidae Squid family creatures, they are mainly distributed in tropical and temperate shallow seas.

In the eyes of many people, as long as they live in water, most of them are fish animals. So many people wonder, is the squid in the ocean a fish? In fact, squid is a mollusk, not a fish, although they also live in water, but they are not very related to the fish family.

The squid, also known as the soft fish and the gun squid, is an animal with a head and many legs.

Squid, which is often found in the pelagic shallow sea, is a mollusk with an elongated body and is also a valuable seafood. Nowadays, there are many artificial squid, they can generally grow very large, and the meat is tender and delicious, which is loved by some people. It should be reminded that when eating squid, you must pay attention to cleanliness, unclean squid is easy to cause poisoning.

The squid we generally eat is relatively large if it is tens of centimeters long, and the small squid that we generally eat is about ten centimeters. There is a kind of deep-sea giant squid, called King sour squid, which is the largest of the same family, also known as giant small-headed squid and giant spear squid. This squid is not only the largest squid in the world, but also the largest invertebrate in the world.

At Wellington Beach in New Zealand, three brothers looking for a dive site spotted a giant squid that had washed ashore. They were amazed at the sight of such a large squid, and after taking turns to shoot **, they contacted NIWA (National Institute of Water and Atmospheric Research). In everyone's opinion, such a giant squid is very rare.

Octopuses are mollusks. Octopus is a temperate mollusk, living underwater, adapting to the water temperature can not be lower than 7, the proportion of seawater is the most suitable, and the environment with low salinity will die. It can feed on large animal plankton and grow.

It is widely distributed in tropical and temperate seas of the world's oceans.

Extended Profile: Not only can an octopus spray six consecutive jets of ink, but it can also change its color and anatomy like the most nimble chameleon, becoming like a stone covered in algae, and then suddenly lunging at its prey, which simply doesn't have time to realize what's happening. Octopuses crawl through reefs, rock crevices and seabeds using their nimble wrists and feet, sometimes camouflaging themselves as a bunch of coral, sometimes as a pile of glittering gravel.

Octopuses feed on gills and crustaceans (shrimp, crabs, etc.), with some species feeding on plankton. When the octopus is in danger, it spews out an ink-like substance that acts as a smoke screen. Some species produce substances that can paralyze the attacker's sensory organs.

1. Octopuses are mollusks.

2. Octopus, also known as stone dwelling, octopus, sitting cockle, stone sucking, looking tide, dead cow, belongs to the mollusk phylum Cephalopod Octopod.

3. Molluscs: a kind of invertebrate propeller with soft body, mollusks generally have a symmetrical body shape, but some mollusks have various peculiar shapes due to body twisting, they often have a shell, no body segments, and most of them can be divided into 3 parts: head, feet, and visceral sacs. The outer layer** is wrinkled from the back into a layer of skin and is called a coat.

The coat encloses the body and secretes limestone. The shells of mollusks are formed from the calcareous matter secreted by the coat. Molluscas are the second largest group of the animal kingdom, second only to arthropods in number, and there are now more than 80,000 species of mollusks in the world.

Common mollusks are snails, snails, mussels, squid, octopus, etc.

They are three different groups of animals, but they belong to relatives.

Three organisms, the octopus, the squid, and the squid, belong to the phylum Mollusca, Cephalopod, and Silly (Dimill).

Octopuses belong to the order Octoppa, Beard, and Octopodidae in the subclass Doublegill subclass, while squid and squid belong to the Decabrachida order in the subclass Dimill. Among them, the squid in turn belongs to the family of squid, while the squid belongs to the family of squid. So the octopus has two fewer tentacles than squid and squid.

Octopuses are the softest of the three, with nothing hard in their bodies (except teeth). Squid has cartilage in its body, and squid even has hard bones in its body. Both of them have more "bones" than octopuses.

This time, the octopus is separated from the squid and squid. One is completely soft in the body, and the other is only eight "legs (or hands)".

So how do you tell the difference between a squid and a squid?

The squid is short, almost oval-shaped; The body of the squid is elongated and has a circle in cross-section.

The squid has fins on both sides of its body, the fins are separated at the end of the torso, and the fins play a balancing role in swimming. Squid also have fins, but not on the sides of the body, but at the tail end. The fins have two pages, triangular in shape, and are horizontally separated on both sides of the tail.

See the difference between the three?

What is the difference between an octopus squid and a squid.

Squid are mollusks.

It belongs to the phylum Mollusca, Cephalopoda (Cephalopoda), Dibranchia, Decapoda. The anterior end of the cephalic body is spherical, and its apex is the mouth, surrounded by oral membranes, and there are 5 pairs of wrists on the periphery. There is a pair of developed eyes on both sides of the head, 10 wrists, symmetrically arranged on the left and right, the first pair of dorsal is **, and the ventral side is 2 5 pairs, of which the fourth pair of wrists is particularly long, the end is distended and tongue-shaped, the ventral side of the infundibular head, the base is wide, hidden in the mantle cavity, and there is an oval cartilage depression on both sides of the ventral surface called the atresia groove, the trunk is bag-shaped, the dorsal ventral is slightly flattened, and the head is posterior.

The outer part is covered by a very muscular mantle, and the inner part is the visceral mass. The torso has fins on both sides. It is an inshore species with poor swimming ability and feeds on small shrimp.

It is distributed along the coast of Japan and North Korea, and there are many of them along the northern coast of China.

Squid, whose real name is cuttlefish, is also known as flower branches, cuttlefish, or cuttlefish.

It is an animal of the order Cephalopoda of the mollusk phylum Cephalopod. When a squid encounters a strong enemy, it will use it"Inkjet"As a means of escape and waiting for the opportunity to leave, thus there is"Squid"、"Cuttlefish"and so on. There are pigment sacs in its **, which will follow"Emotions"change the color and size.

Squid will leap out of the sea and have an amazing ability to fly through the air.

Octopus, also known as stone dwelling, octopus, sitting cricket, stone sucking, looking tide, dead cow, belongs to the mollusk phylum octopoda. Octopuses have 8 brachiopods with many suckers on them; Sometimes black ink is squirted to help escape. Some octopuses have fairly well-developed brains that can distinguish themselves in the mirror.

It is distributed in the north and south coasts of China. The fishing season is divided into spring and autumn, with spring from March to May; Autumn 9 November. Common octopuses in our country are:

Short clamus (octopus ochellatus), long clamus (octopus variabilis) and true clamus (octopus vulgaris), etc. In the Mediterranean, the Orient and some other parts of the world, octopus has long been regarded as a delicacy.

Therefore, squid and octopus they are both mollusks.

It's not the same kind of fish.

The essential difference is that squid is a shellfish and an octopus is a mollusk.

Generally speaking, the eight-legged fish is an octopus and a cuttlefish is a cuttlefish, but it is not excluded that different regions have different names, or the names taken by merchants are different.

Squids are not squid, but they are very similar in that they both belong to the order Decabrachi, while octopuses belong to the order Octabrachi.

Squid is also called squid fish and cuttlefish. In fact, it is not a fish, but a shellfish, except that its shell has degenerated and turned into a white endoskeleton.

Squids are generally elongated, with long diamond-shaped ends and fleshy fins on both sides of the carcass, which resemble a "javelin head" when viewed upside down; The dry product is flat and lumpy, slightly elongated. The squid is slightly flattened and broad, but it is also distinguished from the squid in other characteristics, and the dried product is oval.

If you press your finger firmly on the middle of the fish carcass, the feel will be different: if it is softer, it is squid, because the squid only has a leaf-like transparent film running through the body; If there is a feeling of hardness, it is a squid because the squid has a boat-shaped hard squid bone.

Both squid and squid use bones, and octopuses do not have bones, so octopuses can change their body shape at will.

Because squids have bones, while octopuses don't have them at all.

Because octopuses don't have an exoskeleton, whereas squids do.

The head of the squid has a small piece of fin-like stuff that is balanced on each side of the head. The head of a squid occupies a much larger proportion of its body than that of an octopus.

Octopuses have no bones in their bodies, whereas squids do.

The head of the squid has a small piece of fin-like stuff that is balanced on each side of the head.

Because squid and squid have a cartilage in their body, they cannot change the shape of their bodies at will.