The most terrifying aspect of these creatures is that when you’re swimming, you think; “Oh, that Cnidaria is preeetty far away, I’ll be fine”!

Then suddenly, in a god damn flash, these guys just appear next to you- Seeing them slowly follow you in the water is TRAUMATIZING. I lost my Stegosaurus Muffin in a battle with these guys, after she defeated three megalodons and one spino in water. I guess I celebrated my victory too soon before I lost her!

I had a giant turtle that took a almost a hour to tame then I was walking to my base to put him in then the jelly thing ate it

These buggers killed my Barry named clever she was an amazing Barry and I'm so sad

#PrayforClever

This is to all of the selfless tamed who sacrificed themselves to the jellyfish including my first carbonemeys

So it was maybe my second-third game I had a nice hut I was with my moschops so I went in the water and saw this thing I thought it was friendly until it killed me and my moschops I got so mad I deleted the whole game and killed them both rip max the moschops R.I.P

These lil son of a megalodon tried to kill my mutated carbonenyms which is my first ever mutation and my second egg hatch

See it kill it.

-TheRedBlade426 alias The Tamer

These things are so annoying

When I go my trike called Mejoberry out to explore I accidentally hit a Parasaur so obviously Mejoberry attacked and ran into the water with it and when I followed I look behind me and a group of like 6 of these dumbos would think they would attack each other but NO they came a killed Mejoberry and all my loot :(.

RIP Mejoberry :((

My first time playing ark survival evolved i started on south and got attacked by a group of chompies and one of those poison spitting dino's but i managed to kill them and ran away cause i saw more dangerous dinos in the distance and the moment i got into the water i got charged by those prehistoric jellyfish and died so since they were the first thing to kill me they became my arch enemy and now i farm them all the time cause that stuff you get from them is useful for keeping animals unconscious while taming😀

All three of my moschops nearly died to that because they like to swim in the sea where the jellyfishes are

One of these weird jellyfish things killed my Scorpion which had a Seattle and everything. I was with my scorpion riding it then I saw a supply drop under the water so I hopped on my icthy and went to get it I came back and my scorpion was dead which is weird cause there were more of my tames nearby and I had them on neutral so they should have helped, but they didn’t :(

Up for people to see that you can’t let your tames in the water by the jellyfish and also up for Scorpios Rex RIP

I had a megalodon, and two ichys. I thought it would be easy to kill these guys but NOPE. They annihilated them all, and now I have no aquatic animals. Literally kill every single one of these, they all deserve to burn in hell.

One day I saw a lvl 300 trike and I tame it with an ascended bow with narcotic arrow when it came up it was lvl 420 I was so happy then I saw cnidaria in I went to fight and I watch in horror my trike died😭😭😭

These piece of phiomia feces killed mu sarco,itchy,AND A freaking level 400 megalodon damn!!!!

I was killing a stingray and the stingray ran off I shot it with crossbow arrows but missed a lot and I couldn’t afford loosing arrows so I went in the water with my parasaur named Juicy. Sadly I couldn’t control Juicy from going in the water because I was pressing the wrong buttons to move and Juicy was going forward instead of turning around onto shore and Juicy ran into 2-3 Cnidaria’s and Juicy tried to fight them off.. but soon enough it said “Your level 19 parasaur is killed by level 5 Cnidaria.” I was so mad because I tried to escape.. I knew my parasaur couldn’t survive.. so I tried to run to shore but lost stamina and fell down deep. I either would’ve died from drowning or from these stinging bastards. I ended up being attacked to death by one of the stinging bastards and died… I ended up claiming my stuff with luck but new I couldn’t replace Juicy.. Rip Juicy the parasaur!!

We had some good memories my friend Juicy. :)

I had a max level sarco and I was riding around on it then a level 100 jellyfish in the water I was getting a loot drop and it came then it killed both my sarco and me and to that day I never went back in the ocean ever I was scared so I don't use bio toxin anymore 😓🥲😭👁️👄👁️💀

Somehow my triceratops that wasnt in the water got killed by these, thankfully it was one of the more weaker trikes, but still how did it get killed when it wasn't in the water????

I hate these things I want to kill all of them first my sarco died from them because I was going to trade with my friend then when I was trying to mine oil my megladon died in the same place I will now find a way to kill them their family friends and all their sea creatures FEAR ME GREAT JELLYFISH OF THE OCEAN OF ARK

Megalodon will die immediately the server that goes in the water if you tame it they all will die EZ way to overrun the servers water.

Didn't even know these things moved so I swam and noticed they were approaching me and there were 7 and they just swam at me and killed me so yeah don't even get in water with these guys!