According to the information provided by the National Oceanic and Atmospheric Administration (noaa), ninety-five percent of the underwater world is still unknown, and the surface maps of many alien planets are more detailed than the earth's seabed maps.
Every year we will discover new deep-sea species, and these new species are also more than one wonder...
So, the question is, how strange are these species in the deep sea? Today we will open our eyes together
Why is there so much under the sea
Large animals?
The movie Megalodon shows the oversized sharks deep in the Mariana Trench. In fact, in addition to sharks, we have found large squid, spider crabs and so on in the deep sea.
One theory is that large animals have a slow metabolism, so they need less high-energy food and can live in the deep ocean with less food. There is also a theory that deep sea water is too high pressure, and large animals are more resistant to pressure.
But there are also many small animals in the deep sea, including microorganisms that are invisible to the naked eye, and they may have evolved from terrestrial microorganisms. In addition, near the submarine volcano, there are organisms such as sulfur bacteria, which make up the lowest layer of the food chain there.
The bottom of the sea is unsightly for animals
"Big-Eyed Thief"
There is a passage that says: Because the seabed is too dark, they can't see each other anyway, so they will grow casually.
The first half of this sentence is still more reasonable, just like the law of the dark forest, all individuals should try to find others and avoid others from discovering themselves.
Since the seabed is very dark, in order to see clearly, the eyes must be large and collect all possible rays. This is why some animals have out-of-proportioned eyes and become "big-eyed thieves".
Glass-headed bucket eye fish
For example, this glass-headed bucket-eye fish (also known as the tube-eye fish), its head like a brain two balls are its eyes, and the two small holes in the face are its nostrils, and its eyes are in the transparent head, making its vision wider.
Axefish
There is also an axefish, nicknamed the dead man's head, is also a frighteningly large eye, it belongs to the bony fish salmon, the suborder Megalodon, the starfish family, but the axefish is terrible, but it is very small, only a dozen centimeters long. Because this fish is often used as food for many deep-sea fish, large eyes can make its survival rate higher.
Of course, there are many big-eyed animals on the seabed, such as SpongeBob SquarePants, Pai Daxing... But these are not the topics we are discussing ha ~ ~
Sea animals that do not grow eyes
Of course, if there are frighteningly large eyes, there are naturally those who do the opposite. Some animals simply abandon their eyes and rely on other senses to understand the world. These "not long-eyed" animals, understand?
Ferrets
The ferret (yòu) fish just degrades the eyes ↓↓↓
Two-colored snakehead
There is also a two-colored snakehead (lǐ), and the eyes are also almost degenerate to the point of nothing.
In fact, many land animals, because they grow in soil or cave water sources, also give up their vision and rely on touch and smell to perceive, such as star-nosed moles, blind snakes, and some salamanders. In addition, there are some inferior animals, such as earthworms, that have not evolved the sense of vision at all.
Big mouth eats deep-sea animals in all directions
In addition to having eyes or other senses, deep-sea animals must also eat if they want to survive, and a large mouth is very necessary at this time.
Vipers
The kuí fish, also known as the viper fish and the convex tooth fish, live on the seabed below 5,000 feet (1,500 meters) during the day and move to a shallow area 2,000 feet deep at night.
This large mouth and curved teeth can make it difficult for prey that is bitten by it to escape. Its mouth can open to ninety degrees and eat prey as big as itself. Fortunately, the fish is only 30 centimeters long at its largest and non-toxic.
Sturgeon
Another typical largemouth fish, the ān kāng (anglerfish), is more familiar to everyone, with a mouth wider than the body and can swallow other prey like a vacuum cleaner.
The bluff is frightening
Deep-sea animals
There are also deep-sea animals that look ugly purely to scare other creatures and prevent themselves from being eaten.
The most typical is the vampire squid (also known as the vampire octopus, ghost slug), which resembles a red umbrella with spikes on the inside of the tentacles. In case of danger, it will turn over its umbrella cover and turn it into a thorn ball. But in fact, its body structure is more like colloidal, and those thorns are also soft.
This bravado animal is considered by scientists to be the common ancestor of octopus and squid before they diverged.