1. Containing types: There is only one type of sand jellies, i.e., sand jellies. In contrast, there are more types of jellyfish, including noodle jellies, brocade jellies, sand jellies and so on.
2. Characteristics: The adult umbrella of sand jellies is hemispherical in shape, and the umbrella rim has about 96-112 rimmed petals. And the body of jellyfish is bell-shaped or inverted bowl-shaped, with a pendulous tube called pendulous lip in the center of the lower umbrella surface.
3. Main distribution places: jellyfish are mainly distributed in China's Yellow Sea to the coast of Zhoushan, Zhejiang Province. The jellyfish is mainly distributed in the southeast coast of China, such as the Bohai Sea, Yellow Sea, East China Sea, South China Sea and coastal provinces.
In summary, there are some differences between sand jellies and sea jellies, which are mainly reflected in the types, characteristics and distribution areas.