Their attacks shock you (which makes you unable to move), and they often stick in groups. If you get surrounded by these, you're basically dead. Don't use melee weapons, use a crossbow.

They drop bio toxins, which can be used for a new tranq dart that's more powerful AND shocks the target.

They aren’t tamable because there so o.p, one killed my lvl 296 Rex🥲

Make these tameable so I can light up my pond 🐙

If you need the bio toxin but don't have underwater tames, just use a crossbow and normal arrows and it will die pretty quick. DONT ATTACK WITH A CLOSE RANGE WEAPON!!! harvest with hatchet to get the most bio toxin.

You cannot tame a jelly fish but you can kill it and use it's wonderful biotoxins as narcotics to tame other huge animals

Once grabbed they won't let go till dead I had a Lvl 215 spino and was having a jolly swim then BANG WAM I get jumped by 8 jelly bastards and the spino died :(

Force tame it to actually be the king of ark this time

Basilosaurus is the by far the best way to kill these things. Doesn't get shocked. High level ones harvest hundreds of biotoxin in minutes with no threat.

When it says a 50% death risk with your fist idk if its talking about the jelly fish or you