Most people assume that of all animals on Earth, insects are the most numerous, for example, ants. However, this answer is not entirely correct, the most common animal on the planet is the miniature ocean dweller - Antarctic krill.
The most numerous marine animal
Krill is a crustacean, no more than 5 centimeters in size. In appearance, krill are similar to shrimp.
Despite the fact that Antarctic krill live only in the Southern Ocean, the number of individuals is incredibly huge, the largest in the world. Krill is mined on an industrial scale; its meat is considered a valuable environmentally friendly product. In addition, this marine animal is the main food link in many food chains.
The abundance of krill in the ocean is so huge that when the flock swims, the color of the water changes. One cubic meter of the ocean surface accounts for 30 thousand Antarctic krill. The total weight of this species is 500 million tons. This sea animal is an absolute record holder among all terrestrial creatures.
Most numerous ground class
The most numerous class of land animals is insects. Scientists have counted almost 1.5 million representatives. According to some reports, the total number of species is about 20 million. In terms of numerical indicators, this is less than the amount of Antarctic krill, but if we take it among terrestrial animals, then insects are the palm.
The superiority of insects in numbers over other classes of animals is explained by the fact that they can easily adapt to different habitats, they have several methods of reproduction (bisexual, parthenogenetic (for example, in aphids), asexual), as well as high fertility.
The most numerous birds
When counting numerous breeds of birds, domestic chickens are in the lead. This animal is the most on Earth. There is nothing to be surprised at, because chicken is bred in almost all countries. There are huge chicken farms, poultry farms. The exact number has not been calculated, but scientists suggest that the numbers may fluctuate in the region of 3.5 billion individuals. It's roughly like this: there is one chicken for every two people. But the second place in terms of numbers is occupied by a little-known bird - the red-billed weaver, about 13 centimeters in size.
If we are talking about the number of animals, then it is interesting to know which pets are the most? Pets, if not in every house, then in almost every one. Statistics show that cats are the most numerous pets. This is probably due to the size and ease of caring for it. The prevalence of the breeds is as follows: the first place is shared by the Persian and Siamese cats, on the outskirts of the Maine Coon breed.
