Don’t tame a Therizinosaurus or a castoroides without killing any of these...

Hide your kids hide yo wife and hide your husbands while your at it cuz we got jelly fish killing everybody

Used for Bio Toxin and to kill yourself when you spawn in the wrong place in a hurry.

So I killed two with a sling shot it took about 10-15 stones for them to die and they dropped about 24 bio toxins!!!!

Very easy to kill just remember to stay out of the water or they’ll kill you.

Also very sad that you can’t tame these creatures of doom!!! :(

Best way to deal with these things. Shotgun and raft combo. You sail the raft close to them, stand on edge of raft, and shoot them point blank. These jellyfish are worse than the Box jellyfish and or man o’ war jellyfish we have ILR, and need to be exterminated.

Side note. The raft and shotgun combo works for exterminating other hazardous sea life as well. Like so that new players will know how to deal with these things efficiently.

Another side note. Rafts are perhaps the best thing to have if you plan on taming any sea creatures. Put a generator and an auto turret on a raft to make a mobile safe zone for your aquatic tames. It really helps.

Another side note. Auto turrets are mid to late game, generators are mid game. Be wise with your engrams, and be sure to follow the below strategy.

From level 1-75 unlock all the weapons and saddles, then produce two of each saddle. After which, you’ll want to use mind wipe to reset your engrams and unlock all the armor. Produce two sets of each armor. Mind wipe a second time, then use your engrams to unlock whatever else it is you may need. That mind wipe is perhaps the most useful recipe in the game. Best way to get the recipes is to go to a cave and farm the creatures in there for recipes and ammo. Always be sure to check the inventory of everything you kill, you might find some useful gear.

There aren’t very many ways to kill them. One method is to use a titanosaur or possibly a bronto to kill them, use an argentavis to kill any floating above the water, or a crossbow. It may be possible to use a diplo to push them if they are too close to your aquatic pets.

In mobile, if you ever got your precious dino get stinged by these, you can either equip your strongest melee weapon and kill the cnidaria or quickly jump back on land and go to your inventory -> your charater info -> look into the stat section then find and press the tame button (it will bring up the list of all your tamed)then select the name of your endangered dino and chose request, it will take a short amount of time(about 20 seconds) for the request to be done then after it done, your dino will be next to you

NOTE: for land dino, you must be on land in order to request, for sea dino you can either request while in water or do it on land then jump back in

I had save my megalodon from cindaria 2 time and my rex 1 time now

Up if found useful

Kill quickly without any danger or ammo:

This just happened to me accidentally, but it seems useful. Get just close enough to make them follow you. Rush back to the beach. Wait for them to get close and then move down the beach away from them. Try to get them as close to the shore as possible. If they get too close to you, just get on the beach and add a little distance. When they are close to the shore, move around them on the beach and go back in the water (on their opposite side). They will all go on the shore and die. Collect your biotoxin

How to kill:

Find some in the shallows

Lure towards shore or at least to where you can stand Shoot with bow

Boom! Bio toxin

Just use a crossbow? Thats easy with that even more with a rare one out of an drop

One of these pieces of crap killed my lev 280 ledthicys i mean how i lit could kill every thing with it

These guys drop bio toxin, a very helpful little material in taming. If you ever see them, they are very easy to kill with a ranged weapon like a crossbow. Kill them and all their family, and hack em up with an axe.

This guys are annoying don't go near them but u can get bio toxin from them bio toxin is good for toxic arrows or whatever toxic arrows can knock out dinos so u can tame them that's all bye

These things are in the herbivore category, if so, then why are they aggressive? Is it the same thing with the therinzosaurus.

You can lure them at the coast (as possible near to surface) and then put your icthiornis to do the hard work... Gz birdy

Passive tame, they like to be petted.

Step 1. Equip raw fish meat into your 0 slot of your hotbar.

Step 2. Enter the water and approach Cnidaria to feed.

Step 3. Realize that you are a fool and I have wasted your time.

Step 4. Die

Step 5. If you read this without attempting it congrats you don’t waste ur time.

Go fire on fire and shock with these guys with electrophorus

Will take you off shadowmaes!!!!

I hate them they they kill me in 5 minutes so they are not good.