1. swordfish: This is a close relative of jellyfish, belonging to the marine plankton of the genus Swordfish in Hydra.
2. lighthouse jellyfish: this is a jellyfish with a diameter of only 4~5 mm, belonging to the class Hydra. It mainly feeds on smaller microorganisms and adopts asexual reproduction.
3. Haiyue jellyfish: This is a common jellyfish, also known as UFO jellyfish. Taxonomically, it belongs to the animal kingdom, Echinoderm, Cephalopoda, Cephalopoda, Aegilops and Oedogonium.
4. Styx jellyfish: This is one of the largest invertebrate carnivores in the deep-sea ecosystem, also known as bulb jellyfish or giant Styx jellyfish. Taxonomically, it belongs to the animal kingdom, echinoderms, Cephalopods, Cephalopods, Hydromedusae and Styx.