One day, a squid is freely traveling in the deep sea looking for small fish and shrimp as a snack. At this time, a huge whale swam in front of it, and as soon as the whale saw the squid, it opened its blood basin and pounced on it viciously.
The squid was horrified and hurried to flee, but where was the opponent of the whale. Seeing that the squid is about to become a good meal for the whale, at this time the sea suddenly "black smoke" rolls, this smoke is like a huge squid, the whale quickly rushed over, but in front of the eyes is pitch black... By the time the smoke cleared, the squid had escaped without a trace.
Yes, the squid was able to escape by confusing the whale with the well-known inkjet "method". The squid has an ink sac in its body, once it encounters a strong enemy such as a whale, it will immediately spew out a stream of ink from the ink sac, dyeing the surrounding sea water pitch black, so that the enemy can not see it at once, under the cover of this black smoke screen, the squid will escape.
When some scientists study the squid, they also find that the ink it spews out is very similar to the squid when it just leaves the body and is not open, which makes the enemy mistakenly think that it is a squid and launch an attack, and as a result, this "ink bomb" is washed away into a "smoke screen bomb", so that the enemy is pitch black in front of the eyes, and thus defeated.
So, how does the squid spray "ink" to get itself out of danger?
This starts with the body structure of the squid. The squid has a flexible squid with ten tentacles, a funnel-like injector that hides symmetrically arranged left and right.
Inside the mantle cavity. In the upper part of its ink sac is the ink sac cavity, which is the place where the ink is stored; The lower half is the ink gland, the cells of the ink gland are filled with black particles, and the senescent cells gradually rupture to form ink, which will be temporarily stored when it enters the ink sac cavity.
When the squid encounters danger and is too late to escape, it will rapidly shrink the ink sac, and the ink will mix in the water of the coat cavity and spew out from the mouth of the funnel, so that the squid will make the sea water near the body turn black, thus hiding itself, and escaping with the rapidly spewing water.
The largest squid in the world is the king squid, which generally lives deep in the ocean. In 1873, the King Squid was first discovered in the gulf near Newfoundland. At that time, a small boat was suddenly attacked by it, but thanks to the axe of the ship owner, it cut off one of its tentacles with an axe that was 5 meters long and about 0.3 meters in diameter, and escaped by chance. Since then, people have begun to trace the traces of this "squid king", but there has been no harvest. #奇妙的动物 #
