Crab is found in warm and hot seas, with a big head, a flat body and a big chest eel. At first glance, people often regard it as a hornfish. Because it not only looks like a hornfish, but also makes a sound like a hornfish, and it can crawl freely on the bottom of the sea. However, its pectoral fin is bigger and longer than the hornfish, and it can glide on the bottom of the sea just like the wings of an airplane, so it is called the flying hornfish.
It can not only swim fast in the water, but also crawl on the bottom of the sea and even fly! It can be seen that its. sports ability is extremely strong. There are three independent fins in its pectoral fin, which can move freely. It crawls freely on the seabed with the help of these three fins. These independent fins are its tactile organs and can sense the situation on the seabed. Because these three independent fins have special functions, the muscles that drive these fins are particularly developed. This is the result of natural selection and natural selection.
When it crawls from the bottom of the sea to swim in the water, the pectoral fins and the independent fins in front of the fins will be gathered and clung to the side to reduce the resistance. When its swimming interest is still rising, it rushes out of the water at a very fast speed, and then spreads its "wings"-pectoral fins flying in the air. In fact, its "flying" and the "flying" of flying fish are not really flying over the drum, but only flying with the help of wind.
Bladder is an ancient fish species, which is of great research value in the evolution of organisms.