Never go near it with your Dino, it will kill you, your Dino, your friends, your family, the guy down the street, some guy over in Africa, all while they won't do a thing to attack it.

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.

"Deepest parts of the ocean" yeah right! You run into these guys on the surface.

If you get stung, you can piss on it to help the rash go away.

If you are reading this it seems your underwater adventure came to a shocking conclusion.

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 :(

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.

easy kill if you use a raft and crossbow

Dismount your Dino when ambushed by jellyfish, whistle follow then swim down deeper. After the initial shock wears off the Dino finds it easier to escape downward unmounted. Don't necessarily wait on it either, swim to a safe distance and it will catch up.

Use the ichthy they said... it's immune to shocks they said... that's fine I'll quickly swim done with no scuba gear and lure one to the surface...zap... surface is so near yet so far... manta finish the job

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

If you're tame touches them then just just press B and drop all inventory. Respawn in bed and start taming another tame.

Using a quetzal, kill the ones on the surface for easy bio toxin, then use it to make shocking darts, which are better than tranq darts, or use the bio toxin as a better narcotic for being Dino's torpor up

While your tame still might die anyway if you have a high hp dino that gets zapped by these whistle followall and swim away. If you can i managed to rescue my 140 rex that way. She had 8k health and lost around half with a normal saddle. I came back with my re and killed them with rock throw. (It was super effective)

If your Dino gets stung you get dismounted and if You get stung you become paralysed and it will knock you out!

It wants to cuddle with you. It won't stop till it touches you

These things dismounted me off of my 261 mosasaur and then killed me. I tried to go back and whistle the moss but it was stunned and couldn't move so it died instead.

These guys give bio toxin which is 2x more powerful then normal narcotics.

I don't use narcotics,I use it's toxins.it's toxins do more torpor than narcotics.