Jellyfish are pretty cool. Here are some things I had no idea about them that makes them even cooler:
- Box jellyfish have 4 stomachs, 4 brains that compete for dominance, and 4 clusters of 6 eyes
- Irukandji jellyfish are teeny tiny (see picture) but have barbs all around them and are one of the most painful and deadly jellyfish
- The species Turritopsis Nutricula is virtually immortal because it reverts from a Medusa (the age of sexual maturity) to a Polyp whenever it wants to escape predators; its also 4.5 millimeters in diameter
- Jellyfish may be increasing in population due to over fishing in certain areas, where they take over to feed on the prey that the missing fish can no longer feed on
- The only jellyfish that is harvested for food is of the order Rhizostomae, and they have no tentacles
- In captivity, jellyfish need to be moved with an artificial current in the tank otherwise they will get stuck in corners
Source: Wikipedia
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