Causes of Death, Competition, IUCN Rating, Impact of Humans

Causes of death

Their predators include sea anemones, tuna, sharks, swordfish, and turtles

They do not really compete with each other for mates  as they can produce asexually

They face diseases like inversion which  which causes their body to turn inside out and balling which causes their body to curl up

If they do not face any of these, they can theoretically live forever as their body continues to regenerate itself, although this is unlikely in a wild setting

Competition

Within their species, there is competition for food, although when in groups this doesn’t occur

Outside of their species, they compete with fish for food and dominance 

Alien harmful algal blooms, like C. monotis, D. acuminata, and F. japonica have invaded the Mediterranean and causes zones with little to no oxygen or light which is harmful for the underwater ecosystem

IUCN Rating

The immortal jellyfish is not featured on the IUCN, however it is not extinct and an estimated population is unknown

Impact of Humans

Humans’ fishing nets have caught a lot of jellyfish which can harm them. Also, fishing can deplete areas of some of jellyfish’s natural predators or competition.

In the future, the population can potentially grow out of control

Humans first became aware of this species in 1883, but were impacted by fishing in the area prior

In order to minimize jellyfish getting caught in fishing nets, some fishers have introduced guide nets with larger than usual holes