Jellyfish are invertebrate marine animals, and they are a relatively low class of organisms. Generally speaking, the life span of most jellyfish species is relatively short, with an average life span of only a few months. Specifically, the life span of jellyfish is different, because jellyfish will have different species, these different species of jellyfish not only have different appearance, but also their specific life span is different.
For example, some of the more common ornamental jellyfish will live for 5-9 months, generally not particularly long, especially some ornamental species living in aquariums. Some jellyfish have a shorter life span, such as some very small cup jellyfish, whose life span is only about one month, some even only about two weeks. However, some special jellyfish have a longer life span, such as jellyfish, which also belong to the jellyfish category, their life span will be about one year. There is also a special jellyfish called "lighthouse jellyfish", which has a prominent feature that they can regress to their juvenile stage after they are older, so they can theoretically survive forever.
Jellyfish is an aquatic organism, for a long time, their body structure has been adapted to the marine environment, so they are suitable for living in the water all the time, can not let them out of the water. Jellyfish's body composition, the vast majority of water, if out of water, they will feel uncomfortable, longer if they may die. Therefore, if jellyfish are kept as pets, try not to let them out of the water.
