In marine life, squid and octopus are not the same kind of animals, octopus belongs to octopus, squid belongs to squid, the appearance is the most obvious difference, their brachiopods are different, octopus has 8 brachiopods, squid has 10 brachiopods, squid has 8 short wrists, and two long tentacle wrists, and there are about 350 known squid species. Recently, a strange squid was found in the California waters of the United States, with strawberry-colored skin, and the eyes are still very asymmetrical, two eyes are large and one small, and the color is also different, one blue, one yellow-green.
According to the Monterey Bay Institute of the United States, this "strawberry squid" was found in the 725-meter-deep sea of Monterey Canyon, using an unmanned submersible with ultra-high-definition resolution shooting function, this squid looks very large, in fact, it belongs to a small and medium-sized deep-sea squid, with a body length of only more than 10 centimeters.
"Strawberry squid" is this squid shape color like strawberry, its scientific name is the sail squid, the sides also have extremely thin fins, showing a wavy shape, swimming slower. Its extremely asymmetrical eyes are very important to the heterospuspic squid, as a species living in the deep sea, it is necessary to observe both the situation on the surface of the sea and the situation on the seabed, so that the structure of the eye is conducive to the full observation of the surrounding situation of the squid.
- The "strawberry squid" is also a carnivore
In the marine food chain, strawberry squid is too small to become food for other marine organisms, tuna, swordfish and other fish will prey on strawberry squid, strawberry squid is difficult to avoid these predators with speed.
Strawberry squid will also feed on smaller marine organisms, feeding on fish and shrimp, molluscs and crustaceans, and other animals, and there are data speculating: it is very likely that the strawberry-colored skin of the strawberry squid is to prey on shrimp, crabs, fish, etc. that have a lot of astaxanthin in the body, resulting in discoloration.
- The mystery of the size of the squid's eyes
In many deep-sea squid, they have a high probability of "big and small eyes", so the size of the squid is not born, but due to their living habits, so that their eye structure has a special change.
When the alien sail squid was a child, the eyes were the same size, and the adult squid appeared on the left eye almost twice the size of the right eye, which was because the left eye of the squid had a large eye, which needed to look up and observe the shadows of other animals; the small eyes of the right eye of the squid looked down, which was conducive to finding many glowing animals in the deep sea and catching the traces of creatures in the dark.
- The mystery of the eye color of the squid
The eyes of the squid will appear a blue and a yellow-green, because of the difference in light filtering, when the light from the sea surface enters the eyes of the squid, its eyes are like a "filter" filter, so that after absorbing the blue light, you can better see the shadow of the prey that appears above you, and the yellow-green eyes also have the same principle, like a layer of "filter", which can directly filter out the glowing prey under the body.
Strawberry squid looks at a bright color, it is easy to become the focus, but in the deep sea, red is an unrecognizable color, that is, when there is no light shining in, strawberry squid is black, other predators are difficult to find it, so the strawberry squid swims slower, it is not by speed to get rid of predators, but in the dark deep sea to hide the trail.
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