They are fairly aggressive but slow and for some reason they have no cool down on their stun so they will infinitely stun a creature with no resistens doing like 40 damage until the creature dies or if you can get it away (the stained creature wont be able to move so kill the jellyfish or pick up the creature) if you have good o2 and the jelly fish is NOT agroed on you then you can swim away very slowly as the jelly fish will stun you about .2 seconds after your not stuned but if its agroed on you it will follow you and stun you again.

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