Chironex fleckeri: The entire umbrella is rectangular with a quadrangular rim. One or more tentacles extend from the umbrella-like rim in the dispersal region. The tentacles form pedipalps at the base with eight tentacle sacs and are found mainly in shallow tropical and subtropical seas, with a few living in the open ocean.

Cephalopods:Dome-shaped, cone-shaped or flattened, but there is a constriction groove in the middle of the outer umbrella, dividing the umbrella into upper and lower parts, mainly distributed in the deep sea.

Cruciferae:Cruciferae is a sedentary jellyfish. Its body consists of a combination of hydroids and jellyfish and is shaped like an inverted trumpet. It is often found in colder waters.

Flagellate females:The umbrella is bowl-shaped, butterfly-shaped, with eight to more notches on the rim and a tentacle capsule inside the notches. The number, distribution and shape of the tentacles vary from species to species and most live along the coast.

Root Saliva Moth:Close to the flag saliva mother, but the umbrella rim has no tentacles, the mouth carpal fusion, mouth closed, forming many small sucking mouth. East China Sea, the South China Sea and other coastal areas are rich in production.