If you need say a gallimimus you need to kill on of them they give a lot of biotoxin just gather a bunch of rocks and craft a sling shot then find one close to the shore the kill it when their dead you can pick it up then

harvest all the biotoxin (but don't eat it) it gives a lot of torpor when eaten

Some of the players see them as Annoying critters,But they have a use...If you can kill a Jellyfish,I mean Cnidaria...U can get 10-12 biotoxin,Which is good,If u are taming a creature,When it's torpor goes down..We use nacrotics as solution...It increases 40-80 torpor...But a single bio toxin...It's increases 80-180 torpor thats insane...Because Nacrotics need 5 berries and a spoiled meat ..But if u kill a jelly fish u'll get many biotoxins that is equalient to many Nacrotics....U can kill them with basilosaur easily..and lure them to beach shore and killing them,But this method is risky,Because if u get close,They can give u a electronic punch that takes lot of health...I recommend using bow and crossbows for killing it...It's a friend and foe

Tamer’s heaven. Bio toxin is much more effective than normal narcs. Also easy to kill with a basilosaurus...and is worth killing. Spawns mostly in the south zones 1 and 3. Even on low level if you spot these guys near the shore you can make relatively short work of them with a spear.

Grab the most lethal harpoon launcher you can find and get chitin armour, I lost a low level Mosasaurus because of these wretched things

Even a single one can kill my tamed Giga.Well,at least I still have Basi to revenge

Just kill em from a raft it's easier

Annoying but good for distracting trikes

Just kill them all. If you find them, there should be nothing to stop you from killing them. They give lots of biotoxins which are more effective than narcotics and they deserve to die.

What may be one mans trash, may be another mans treasure, the have the most powerful stuff to keep creatures unconscious and there easy to kill if you know how to, use slingshot, spear, pike, all bows, guns anything that can reaching without you getting hit.

Not efficient, but relable way to get biotoxin: run near them in water them swim to a coastline and wait. They will pursue. Then back up just enough in the water where they cant go forward, but you can hit them with a pike or spear. This even works with stuff like axes. I did this on my third day I ever played this game. Had no use for biotoxin though.

I wouldn’t recommend going after these guys unless you have some kind of bow. Once you do get a bow, shoot them from a distance where they can’t get you and shooting them is easy, you can walk up to their bodies once you kill them, take your arrows back and harvest it, but if there’s more than one I would get them all before taking the arrows/harvesting.

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

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!🤙

If you want bio toxin , lure them to the upper surface and drive over them with a raft, kill them and get that bio toxin

U can eat stuff when ur stunned by them

Mega turtle and Kark should be immune to jelly sting because some turtles are immune to the stings and some crabs are too.

If the piranhas they say are some of the most annoying, these bastards are deadly af. Mantas pierce through armour, shred it, while these guys stun you. Include the piranhas, and omae wa mou shindeiru. Best bet is Basilosaurus, or decent levelled mosa ( not recommended as shock attacks are the weakness of the mosa) and tusoteuthis, because of the attack range. I hunt these down to total extinction, then gladly save up the bio toxin they drop for giga, royal griffin ( I play on mobile so...) or taming of other whatnot thingys. If you want to kill these early game, as they are seen on the shore quite easily, just grab a few spears and/or pikes then slaughter these bastards. Lure them by walking until swim mode into the water, then depending on your movement speed go backpedal to the shoreline. This will successfully lure them near you and you can slaughter them as you please without endangering you or your mount.

NEVER never never never never ever go near them with sarco I just tried to tame an itchy and three of these guys killed both of them and almost killed me wow

Tame an ichthyornis and get it to attack cnideria, it kills them but doesn't bring the body, harvest with high level dino

The bio toxin is better than narcotics