Jellys

Latin name: Rhopilema esculenta

Common name: Sea snake

Belongs to the phylum Coelenterata and the class Jellyfish.

Morphological characteristics:

The umbrella body is hemispherical, the diameter of the umbrella is generally 30-45 cm, and the larger one can reach 1 meter. The outer umbrella is smooth and has 130 to 180 lobes on the edge. The body color varies greatly, mostly cyan blue, but also dark red or yellowish brown. The palpation fingers and appendages are white. It is warm water and likes to live near river mouths. It has little ability to swim by itself and often floats with the tide, wind direction and ocean current. It is more sensitive to light and seawater salinity. It usually rises to the sea surface in calm weather or in the morning and evening. It sinks in storms and heavy rain or when the sun is too strong.

Life habits:

Jellyfish live a planktonic life in the ocean, inhabiting coastal waters, especially near estuaries. The water depth in the distribution area is generally 5 to 20 meters, and sometimes up to 40 meters.

Reproductive habits:

Jellyfish are dioecious and sexually mature in autumn. The number of eggs carried by an individual jellyfish is directly proportional to the diameter of the umbrella. Generally, the number of eggs carried by an individual jellyfish can reach 30 million, and the number of eggs in a high number can reach 50 million.

Jellyfish

Jellyfish (see jelly) is a marine coelenterate with an umbrella-shaped body, translucent, white, cyan or yellowish color, with an umbrella diameter. It can exceed 45 cm and can reach up to 1 meter in size. The 8 thickened wrist bases (with shoulders) under the umbrella heal and the mouth disappears (replaced by a secondary mouth of a sucker). There are many rod-shaped and The filamentous tentacles are densely packed with nematocysts and can secrete venom. Its function is to release venom to paralyze small animals for food. Jellyfish are widely distributed in tropical, subtropical and temperate coastal areas. Common jellyfish in my country include edible jellyfish with smooth umbrella surface and only filaments at the mouth and wrist, or rod-shaped jellyfish with both rods, and jellyfish with many small warts on the umbrella surface. Yellow-spotted jellyfish.

The life cycle of jellyfish has gone through the main stages of fertilization, aphids, aphids, larvae, polypoid larvae, transversely split bodies, butterfly-like bodies, and adult stings. In addition to the sexual reproduction process in which sperm eggs are fertilized in the body, the polyp-shaped larvae of jellyfish will also produce creeping roots to continuously form foot capsules, and even the transverse body will continue to split into multiple disc-shaped bodies, through asexual reproduction. Increase the number of individuals