On the server I play there is this guy called ocean man and he has 2000 oxygen and is willing to tame anyone a mosa if they give him cp

Center tip: as they have added the mosa to the center I've found the easiest way to knock one out is find one close to the bubbles get its Agro and swim in the bubble the mosa will get stuck and it can't hit you. Also this gives you unlimited oxygen and sanctuary from being attacked by anything else. 🤘🏼

These can be tamed by aggroing them and swimming upwards. There is a height barrier which they cannot cross and so you can tranq them with a crossbow from above that invisible barrier.

If you have 300+ oxygen they are relatively easy. Take advantage of their bad turn radius and stick close to their tail to KO.

Swim in circles if you plan on taming it. It has bad turning speed so it leaves a spot in the middle where you can somewhat safely tranq it

DONT FIGHT JELLYFISH WITH THESE I made this mistake and my 261 mosa died.

Underwater caves are very helpful for knocking these guys out. Always bring extra tranqs as this thing is basically the giga of the sea and torpor drops very fast.

Besides the giga this is the hardest dinosaur to tame, note you will need a lot of narcotics and food. Before you begin the tame I recommend at least 2 to 3 full scuba suits for obvious reasons. You need to have at least a Ichthyosaurs or Megalodon, so you can actually move around and find a decent one. Once you find one you want to tame simply start shooting at it with the crossbow. Now right when you get his attention swim up, you should notice the Mosasaurs stops following you after a certain height. The Mosasurs cannot go higher than wherever it stopped. So simply park your water Dino above it and keep shooting it. If it runs off keep doing the same thing over and over again. Sooner or later you will take him down. Good job! Then simply use this app to figure out how many narcotics/food you will need to tame it. Once it is done enjoy your king of the water.

Getting enough quetzal kibble to tame one of these bad boys can be hard to come by. Starve the mosa, and have sheep waiting at the surface, you can kill them for mutton to feed the mosa.

I think everyone knows this but still reminding that mosa has a water depth limit which it can't cross and come more higher in wild.... just use that to tame and can stay closer to him

There is crystal cave on Ragnarok around 12,23ish where you can trap the mosa, I use a ichy to trap them as they are small enuf to get in the sallow area but the mosa can’t so they get stuck👍... hope this helps

I've found that the easiest and fastest way to knock one out is to get its attention and swim through a gap in those large underwater stone formations,it will follow you and get stuck allowing you to shoot it as many times as needed

Take an ichy. Get your best xbow (I prefer xbow because it’s easier to shoot and hit target on the back of the ichy) circle the mosa firing away. The ichy is quick enough to dodge the bite. If you dodge a wrench you can dodge a mosa.

Use a squid to bring it to the surface it doesn't attack when close to surface

JUST KEEP SWIMMING!!!!!! JUST KEEP FU**ING SWIMMING!!!

We tamed a Tusoteuthis and it is able to grab a mosa and keep it still. The Tusoteuthis also does torpor damage so it is very easy to KO. It can't attack while being held either

If you’re planning on taming one of these, don’t do it behind the snow biome unless you have a lot of bio toxin (preferably a stack or two just in case, depends on the lvl.) and make sure to have a swift mount that can dodge the attacks of the said Moss, such as a plesiosaur or something faster. If you do happen to knock one out in the snow biome ocean I suggest you go up for air and wait for 30 secs, (and for health) then go down and wait for 30 more seconds and feed it bio toxin. Keep doing this until it is tamed, Usually his strategy works.
Happy taming! :) Hoped this helped.

Just build a taming pen.
3 Behemoth Gate Frames are prefect (2 might work as well) + 2 Gates
Close one, the other one should be open.
Ride an Ichty and let it follow you.
If you done it correctly it can't get out and due to it's terrible turning radius you can swim with your Ichty to the gate and close ir

Real men use cooked fish meat and narcoberries

If you live on herbivore island or another aquatic location I recommend taming one for base protection and naval superiority