Who lives at the bottom of the ocean? Animal life at depth
Our planet is filled with various living creatures that adorn the Earth and contribute to the ecosystem. But it is no secret to anyone that the water depths are also teeming with a multitude of inhabitants. Although the variety of these creatures is not as abundant as on the surface, but still these organisms are very unusual and interesting. So, who lives at the bottom of the ocean, what are their living conditions?
From space, our planet looks like a blue pearl. This is because the area of all waters is almost three times more land. Like the earth, the surface of the oceans has irregularities. It is dotted with hills, valleys, plains, mountains and even volcanoes. All of them are at different depths. So, the abyssal plains are about 4000–6000 m deep. But even there is life, although this may be surprising, since at a depth of 1000 m the pressure is 100 atmospheres. And with every hundred meters it increases by 10 units.Also, light does not penetrate there, which is why darkness always reigns at the bottom, therefore, the process of photosynthesis does not occur. In addition, under such a mass of water is unable to warm up, in the deepest places the temperature stays at zero. Such conditions make life in these places compared to the surface is not very rich, because the lower you go down, the less vegetation grows. Therefore, the question arises: how to adapt those who live on the ocean floor?
Deep sea life
Although it may seem that in such circumstances, life is very difficult and even impossible, yet local residents are sufficiently adapted to these conditions. Animals that are at the bottom, do not feel strong pressure and do not suffer from a lack of oxygen. Also, those who live at the bottom of the ocean are able to feed themselves. Basically, they collect residues that "fall" from the upper layers.
The inhabitants of the depths
Of course, at the bottom of the diversity of life is not as great as on the surface of the water, and you can count the deep-sea inhabitants "on the fingers." Here are found single-celled, there are a little more than 120 species.There are also crustaceans, there are about 110 species. The rest is much smaller, the number of each species does not exceed 70. These few inhabitants include worms, intestinal cavities, mollusks, sponges and echinoderms. There are also fish living on the ocean floor, but here the diversity of their species is very small.
Is there really darkness?
Since the sun's rays are unable to break through the abyss of water, it is believed that all the inhabitants are in a constant mist. But in reality, many animals that are found there have the ability to emit light. Basically, the predators have such a property from those who live on the ocean floor. For example, the conical periphyllas, emitting light, attracts small inhabitants. This is a trap for them, as they become victims of this predator. But glowing can create and harmless living beings.
Some fish have certain areas of the body that emit light. More often they are located under the eyes or stretch along the body. Certain species of crustaceans or fish use their eyesight, but the majority of the inhabitants have no eyes or have undeveloped organs.This is not surprising, since such “lively” lighting that the bottom creatures create is not enough to make the underwater space visible. To get food, you have to use a touch. To do this, there are modified fins, tentacles or long legs of those who live on the ocean floor. The photo above illustrates one of these unusual creatures known as the Atoll jellyfish. But in the deep-sea depths, many living inhabitants mostly lead a still life, therefore they resemble flowers and plants.