1. Swimming: Dolphins, sharks, fish and other animals swim by flapping swimming organs such as limbs or abdominal storage.
2. Crawl: Animals such as crabs, snails and starfish crawl by stretching their limbs and attaching them to the surface of objects.
3. Floating: Animals such as jellyfish, sea urchins and anemones float by water flow or air bags.
4. Digging: Animals such as mussels, clams and insects use strong muscles and sharp organs to dig the seabed.
5. Walking: Animals such as lobsters, sea snakes and octopus move around by twisting their limbs and bodies.
Benthic species:
After decades of investigation and research by marine scientists and technicians, 20,278 species of marine life have been recorded in the waters under our jurisdiction. These marine organisms belong to 5 biological kingdoms and 44 phyla. Among them, the animal kingdom has the most species (12794), and the kingdom of Monnella has the least species (229). The species of marine life in China accounts for about 10% of the total species of marine life in the world, accounting for 50%.
According to the distribution, marine life in China sea area can be roughly divided into two categories: water marine life and tidal flat marine life. Among the marine life in waters, fish, cephalopods (such as squid, also called cuttlefish), shrimps and crabs are the most important marine life. Among them, the species and quantity of fish are the most, which constitute the main body of marine life in waters.
The distribution trend of marine species in the sea area is more in the south and less in the north, that is, there are more species in the South China Sea, but fewer species in the Yellow Sea and Bohai Sea. According to the latest survey data, there are more than 1580 kinds of marine life on Chinese beaches.
Among them, mollusks (which we usually call shellfish) are the most, with 5 13 species, followed by 358 species of algae and 308 species of crustaceans (mainly what we usually call shrimps and crabs), and there are few other groups. Like the sea area, the species and quantity of life in the coastal beaches of China are gradually increasing from north to south.