A marine biologist showed off the baby jellyfish he had cultivated. He never imagined that a petri dish could hold hundreds of them, like small snowflakes.

The body of a normal jellyfish looks like an inverted bowl or an umbrella. There is a circle of tentacles on the edge of the umbrella shape, and it looks very leisurely when floating in the water. They swim in the sea mainly by spraying water from their bodies and then reflecting it forward. Most jellyfish tentacles and sense organs are symmetrical in all directions. Some jellyfish umbrellas have patterns on them, and some have other colors, which are very magical.

The main component of the jellyfish body is water. The water content in the body can generally reach more than 98%, and is composed of two germ layers, the inner and outer germ layers. There is a thick mesoglea between the two layers, which is not only transparent, but also transparent. Floating effect.

The jellyfish is beautiful but ferocious:

Under the umbrella, those slender tentacles are its digestive organs and its weapons. The tentacles are covered with stinging cells, which are like poisonous threads and can shoot venom. After the prey is stung by the stings, it will be quickly paralyzed and die.

The tentacles grab these prey tightly, retract them, and use the polyps under the umbrella to suck them. Each polyp can secrete enzymes to quickly break down the protein in the prey. Once a jellyfish encounters its prey, it never lets it go easily. When you are stung by a jellyfish and have difficulty breathing, you should immediately implement artificial respiration or inject cardiotonic drugs. Do not be careless to avoid accidents.