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

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.

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

Ride a basilo into battle for these guys. You won't get dismounted and basilo are unaffected by the shocks.

Ok for everyone looking for an easy way to get tons of shocking tranq darts just get a CROSSBOW not a normal bow a CROSSBOW go in the water and get them to follow you (you can shoot or just get close) then you can just kill em in the water cause crossbows can be shot underwater! Yay! no dead dinos except for the Cnidaria!

Do not touch it or els you and your tame will die

At night, these things rise from the ground in the northern parts of the map. Then, they float there like the useless glitches they are. But it’s pretty to look at, and sometimes kills random pterodactyl that pass by so....

I fell in some water and couldn’t move the only people who could save me were probably spongbob and patrick