Do not get in the water with a tame without wiping these things out to extinction. They move silently and stun you and your creature so you can't move or fight back. Typically you can just stand on the edge of the beach, they will come for you, you can hop out of the water when they're close and then just whack them

Once I saw this thing in the water and I was like “ oOh I Didn’T KnOw TherE WeRe TreASure chEstS In tHIs gaMe “ and just ran like Usain bolt into them. I’d say it was more insane Bolt. And Bolted to the spot was I! Yep, my discovery of the Cnidaria!

Ark has a kill 250 dodo quest on mobile… why don’t they have one for these demons? One Like=one person who wants there to be a kill 1,000 Cnidaria quest. Also they killed my first turtle my sarco and almost my spino I have been gathering amber to revive my sarco.

WORST THING IN THE GAME!!!!!! They will stun your tame and kill it, regardless of the level. Only the basilasaurus is safe. If they sneak up on you with your mosasuar, they will kill you and the mosasaur

Don't, just don't. These plastic bags are only slightly malevolent.

U can still hit them when u get stunned

These guys are the spawn of satan. Don’t go anywhere near them

The only creature you’ve really got to hate. Admit it, you lost a Baryonyx or a Megalodon to this, “thing”…

I need to take an rex, looks like I'm out of shocking bullets...

Jelly bois: *chuckles* I'm in danger

Jelly bois after I get there, for no reason: *chuckles* YÕÜR ÏÑ DÅÑGËR

So, I tamed a mosasaur after that I encountered THESE monsters known as Cnidaria. Here’s a little tip if it throws you off your mount swim down and kill the jellyfish

These guys are why you don't get attached to your critters.

Only the basilosaurus can take it without getting knocked off.

I got my high level mosasaur killed because I got knocked off and

An alpha mosasaur killed it.

To kill a Cnidaria, you first need to stay distant from it. Your materials needed are simple, a ranged weapon (Bow, crossbow, gun ECT. Plus lots of ammunition for the weapon. Next you will need to scan the water. Check for piranhas and other predators: IF THEY ARE NOT NEAR YOU CAN BEGIN. First enter the water. Next get close enough till the Cnidaria starts to come. They are slow and with enough speed you can get away. Slowly bring it towards the land/sand. It will try and follow you, since the sand is inclined it can’t come up. You may then start to shoot it in the head (to kill it faster). That is how to kill Cnidarias. If this helps PLEASE up this. Thank you!

People have been telling me how these things killed there pets so when I see one or more I kill them all and harvest them

Yes they are dangerous, but if you use a pike you can float near enough to dmg and or kill, they are usually fragile, but if not you can aggro to shallows and shoot with rifles etc...

I love these suckers on the island for the ease of access to biotoxins.

They are shocking and will stun lock and kill in groups one alone is manageable it stuns mount, you pike or arrow till it dies or visa versa.

Use your basilosaurus to get free biotoxin, they don't get close enough to kill u, ur friends, ur family

Who added these? Like come on? Who was in charge of making these?

It will kill your Dino they have super long agro range I was swimming in a turtle trying to gather oil but the jelly fish killed it rip frank

if there's more than like 4 of these don't even try man, they have HUGE aggro ranges for no reason and will clear you even at low levels!!

thought i could take a couple and i died three times and lost my beaver (rip jack the ripper) before i killed them and got my stuff back 😓

These trashbag demons killed my moshchops when I first started the game

I hate them more than compy