Shoot them with your bow from shore.

Lost two sarcos to these stupid jerks.I'm so mad right now... And the fact that they only target players and our tames is just ridiculously annoying like c'mon kill that coelocanth that's literally infront of you not my tames...😡

I had two crops and 4 raptors and they all died from three of these stupid jellyfish

🤬🤬🤬🤬🤬

If you want to kill these things you can lure it up to the shore.it can't kill you there. You can punch it without getting killed.try yourselves.

Biggest mistake Wild Card ever added to Ark.

Avoid at all cost. Unless you have a basi.

Almost always better to use a projectile attack type

These son of b***cs are so mean but some reason I’ve never had my pets get killed. ANYWAY NEVER GO NEAR THESE GUYS IF YOU SEE 1 KILL WITH A GRENADE OR BOMB!!!

If you find yourself dying to these water demons and want to get your items back, try to lure them close to shore if you're close enough, then punch them to death without mercy.

Punches don't do much damage so you'll be able to hear their sweet screams of agony for a little while.

Like 10 of these swarmed me and killed 5 of my Ichthyosaurs, a raptor, my frog, beaver, monkey, and 3 dodos. I hate them. RIP my fallen soldiers

The unstoppable, most powerful Cnidaria bros I ever seen

I lost my Kapro to these keep all aquatic Dino’s away

How to kill: use tank water creatures like sarcos spinos and barys or use ranged weapons kill it then use it's weaponized guts to tame even deadlier creatures like the cracked carno-allo or Satan's chicken-theri

ALWAYS GO IN THE WATER WITH A CROSSBOW ON YOUR HOTBAR WITH AMMO READY TO KILL IT WHEN YOU GET STUNNED

Worse than mosquitoes, but dame there biotoxin is useful

I had never approached one of these before and they looked weak so I thought I could take on a group of three with my Sarco Chomp, I was so wrong. As soon as I got dismounted I knew this wasn’t going to go well. Knowing nothing about these, I panicked on shore and Chomp got cornered in a stun circle and died. I was so angry I grabbed my crossbow and killed them all. I patrol the beach I have set up on and kill all underwater threats, having no mercy for these guys. I won’t forget poor Chomp

If you encounter these terrifying beasts there’s really only two ways to go about killing them, one is with a weapon that can shoot underwater like a crossbow and firing from a far distance, never letting them get to close, and the other is with a basilosaurus because they are 100% immune to the shocks of Cnidaria, if you try to kill them in ANY other way they will put you and your Dino in an infinite stun lock until you both die.

Do NOT touch even bosses cower in the shadow of a small school of these things as they will die everything from a dodo to the king titan ANYTHING doesn't matter what it is even like Godzilla would run my lvl 250 spino mostly with points in health got killed by like three of these in like 1 or 2 minutes max

Easy to kill if they're really near to the shore. Just quickly hit it once or be close to it then run to land. It will try to swim at you but it'll just kill itself as it comes up to land.

I wouldn’t recommend going after these guys unless you have some kind of bow. Once you do get a bow, shoot them from a distance where they can’t get you and shooting them is easy, you can walk up to their bodies once you kill them, take your arrows back and harvest it, but if there’s more than one I would get them all before taking the arrows/harvesting.

There is no escaping the stun lock. Two of these could kill a giga.