There are many kinds of organisms on the earth, and the unique form of each organism is closely related to the environment in which it lives.
According to this logic, animals living in the deep sea must have degenerated their eyes, right? This is not the truth. Indeed, some animals that have lived in darkness for many years may abandon their eyes. For example, naked mole rat is a good example, but deep-sea creatures do not seem to be willing to abandon the eyes that have finally evolved, so they choose to find another way and become masters of using light. Is there light in the deep sea? The real deep sea is almost without light. 800 meters below sea level, we call this area the Twilight Zone, the last area with faint light before entering the deep sea.
has almost no light below 1,000 meters of the seabed, but the creatures here did not choose to abandon their eyes, but instead evolved larger and brighter eyes. Telescope fish is a typical representative of them.
At the beginning, scientists did not know what these big eyes were. As humans gradually explored the deep sea, the mystery was solved bit by bit. It turned out that these eyes were not used to observe the surroundings, but to stare at the top of their heads. In the deep sea, although there is no light around, there is still some faint light above the head that is almost invisible. Therefore, when a creature passes through the head, a faint shadow will be produced, which is the prey waiting for by the creatures in the deep sea.
It is not a very high probability to wait until a prey happens to pass by the top of your head, so once you encounter it, you should not miss it. Now you understand why deep-sea creatures all have exaggerated teeth, which can make their hunting success rate close to 100%.
There is a problem now. You can find others on the top of your head, and others can also find you on the top of your head. What should I do? Hide yourself. It seems not difficult to hide yourself in the dark deep sea. The easiest way is to turn yourself into transparent, so there are always many transparent creatures in the deep sea, such as glass squid, among which.
has a transparent body and will not create shadows on other people's heads. However, this is still useless for some guys with great eyes, because there are always some things in the body that are difficult to become transparent, such as digestive gland .
Sometimes, it is because of this little opaque organ that exposes its position. Once the position is exposed, it will definitely be a life-and-death life. After all, no one can say how many monsters are in the deep sea. What to do? Since it cannot become transparent, let it shine.
What is the use of luminescence?
This is very useful. In the backlight state, the opaque digestive gland will produce a very small shadow, but if the digestive gland can self-luminous, the shadow will disappear, which will turn the body in the backlight state into a completely transparent state. Is there really such a creature? Of course, the glass squid mentioned just now is not only opaque to the digestive glands, but also the suction cups on the eyes and tentacles are not transparent, and these things happen to be able to shine. Of course, in addition to hiding oneself, glow can also be used to lure prey, and the most representative of them is the squid fish with a lantern.
黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄黄
This trapping strategy is very effective. The little fish will always be attracted by this little lamp. When they wander around the little lamp, their lives will come to an end.What puzzles scientists are that there are some very weak life forms in the deep sea that also have the ability to shine. For example, some types of deep sea jellyfish have such ability. What is the use of this ability? For weak creatures, glowing in the dark deep sea is undoubtedly a suicide act, but these luminous small creatures are not extinct. We cannot give a definite answer to what kind of mystery is hidden in it. After all, humans still have too little understanding of the deep sea. Facing the huge deep sea, humans have no choice but to even have a glimpse of the leopards after several explorations.
