How big is the world's largest biome? Humans catch 500,000 tons a year, known as the "granary of the sea".
Antarctic krill live in Antarctic waters, their body is transparent, very small, generally between 4.5~6 cm, belongs to invertebrates
Don't look at their small size, but they are the largest group in the world, and there is no one. Antarctic krill mainly live in groups, per cubic meter of water, there are 10,000~60,000 krill, their bodies emit a faint biological light, forming a huge "red cloud" in the water.
It is estimated that the current number of Antarctic krill has reached 4 billion tons, what is the concept, the average annual global food production is less than 3 billion tons. That is to say, human beings do not eat grain for a year, only krill, but also can completely solve the problem of food and clothing, for this reason Antarctic krill is also known as the "granary of the sea".
At the same time, Antarctic krill is also an important food source for blue whales, penguins and other creatures, all Antarctic organisms, will eat more than 313 million tons of krill every year, such a huge consumption, why is Antarctic krill not extinct?
The reason why the number of Antarctic krill is huge, mainly thanks to their super reproductive ability, Antarctic krill can lay eggs 5 times a year, each female shrimp excretes 6000~10000 eggs at a time, and as long as 2~3 years, small krill will develop and mature, and then participate in the breeding army, so according to this reproductive rate, Antarctic krill will basically not be eaten extinct.
In the 70s of the last century, humans have started fishing for Antarctic krill, with an annual catch of 500,000 tons, although krill looks like no meat, but the nutritional value is very high, the protein content is as high as 20%, which is the highest known protein content of organisms.
And there are a variety of minerals, including 8 kinds of amino acids needed by the human body, caught krill, people will extract astaxanthin and krill oil inside, used to make medicines and nutritional products, which is very good for the human body.
Scientists said that with the amazing reproductive capacity of Antarctic krill, as long as the global catch does not exceed 50 million tons, it will not affect the ecological balance of the southern ocean, which also needs to be observed by all countries.