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

If you are in a lake and u see this run because when it hits you.you will be stunned and the damage it pretty good and if you want to kill it.kill it with a bow on land.Drops:Bio toxin

Hmmm, let’s see, if you see them, all leveled players should do this…….KILL EM! DRAG THEM ALLLLL THE WAY TO THE SHORE AND JUST KILL EM. Use your bow, clubs, ANYTHING! But maybe not fists tho. P.s, never let your Dino in the water, please, they can come and destroy your Dino with no problem. And P.P.S, they drop a valuable item, but take notice you really need them around level 90. They can help you with knocking out Dino’s! Stay safe from them!😉

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

I watched helpless as they killed my newly tamed megaladon and bronto.

Use a bloodstalker to lure them close to shore then web them in. It is both hilarious and rewards you with biotoxin.

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

l lost my bary to these vermins a few days ago lesson learned dont take your bary into cnidaria infested water

How To Kill Cnidaria

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Cnidarias are very dangerous creatures, they spawn in all costs and even in deep ocean, they have an ability that stun almost all creatures and players, when you get close, they chase you until you get to land, DO NOT USE MOUNTS TO KILL IT!!!

The simplest way I found to kill Cnidaria is:

Make a spear (lv 2) and get close to a Cnidaria, keep distance, when he/she gets close get to land quickly and start attacking, if he/she is not on your range, try again until he/she gets close to the coast, so you can atack.

The Cnidaria give a resource called "Biotoxin" And it's basically a better narcotic, so you can farm those and use narcotics for tranq arrows, and if you're playing in mobile you can make "Toxic Arrows" (lv 61).

You can found Cnidaria in all costs except in the stone pilars in the south (coast).

The dinos that can kill Cnidaria are Basilosaurus, Baryonyx (in my experience) and mega piranha.

Hope this helped!!!

Thank you for reading.

Use a metal sword to one-hit kill them, works on any level

Easy KO

Just get bow and decent amount arrows, have good aim, shoot them from shore. They don't even move! Talk about brainless.

Those guys was never a struggle to me they can be killed easily tho those guys helped me getting up to 2000 bio toxin they are useful to me

Be sure to be on land when you see these guys, they have long range vision.

Also, NEVER EVER use melee, just ranged, these jellyfish are sure a nuisance but give bio toxin which is basically the narcotic twice its stats

If you’re in the water without a tame, as long as it’s shallow backpedaling is almost fast enough to outrun these suckers. Although their stun renders you unable to move, you can still stab it, and they’re squishy.

If u have a base surrounded by a water, didn’t kill these guys, coz if anyone or anything tries to get to your base on foot, they will be murdered. Basically a easy way to get free loot once these guys get distracted and swim away.

Works for me!🤙