A few tips for those who wanna tame one, but are terrified of wild mosa’s (like me) these are mainly for the island though

Tip #1. Grab an dolphin, nothing in the water agros on them (Except leedsycthys, but only if u attack them), and you can use weapons off their back

Tip #2. Make the dolphin really fast, it gives a bit of a confidence boost coz you know you can get away if you have too

Tip #3. Swim to the back of herbi island. Using tidy save, it’s really easy to find them coz there’s not much for them to hide behind, it’s also a liplurodon spawn, so……bonus

Tip #4. Traps! the basic rg trap but using behemoth gates works just fine

Hope this helps some people! (Apologies for the bad spelling in places)

Fun taming. As they can not go up after a certain water level, you can lure it to the level and shoot couple of times before it looses interest on you. And when it looses its interest just go a bit close to it and it will start chasing you again and then you go up that water level and shoot again. Do this for a couple of times and you are done knocking it out.

if you are trying to knock out an X-Mosasaur bring at least 3x the tranqs listed, X-Dinos take 3x less damage from you and your tames so as a result they require 3x as many tranqs. I went through 550 tranq arrows and 5.5 crossbows to knockout a 135 and it took 30 mins of non-stop firing so you might want to build a trap. Btw X-dinos also deal 3x as much damage as a non X-dino of the same species I believe so beware!

Heres how me and a friend of mine tamed it (you can also do this by yourself). Make a bird cage trap made out of stone as they dont damage stone structures. When its trapped, just tranq it with the weapon of your choice.

To make a bird cage trap, youll be needing 4-5 Behemoth Stone Dinasaur Gateway, 1 Reinforced Behemoth Gate, and a couple of stone pillars.

1st, decide on where you want to place the trap, I recommend to place it at the bottom of the ocean.

2nd, place the 1st gateway and put the 2nd in front of it, and so on. Make sure to make a little gap in each of them.

3rd, place your gate at the one end of the trap and the pillars on the other end. Make the gap of the pillars wide enough that an Itchy can slip through.

4th, luring the Mosa to your trap, I suggest to use an Itchy. Grab its attention and lure it to the trap, before you do this make sure the gate is open, just go right inside the trap while its chasing you, exit through the back end of the trap. Trap it, Tranq!

Easy way to tame on mobile (without a trap):

-Get a high lvl ichthyosaurs

-Lvl up movement speed

-Get scuba gear, a good crossbow, and a lot of tranqs

-Shoot at the mosa while staying on your ichthyosaurs

-Every time the mosa gets close, just swim and it won’t hit you

The good thing about using an ichthy is that nothing will agro on you besides the mosa

You can also use the same technique on basically any knock out tame in the ocean

Taming tip:

1. Bring kibble btw kibble amount is inacurate for mobile you wil probably need less kibble

2. Bring basilosaurus

3.bring armor(helm hands leggings)

4.bring flipers

Now for tactic find mosa on a basilosaurus and let it aggro on basi when its agrroved dismount get a bit of distance and start tranqing when it starts to flee persu it and shoot when its ko d watch for its torpor and its surounding

Note(when dissmounting you are in danger thats why you need your best armor and make sure everything is aggroed on basi basi shoud be able to take most things with ease)

I'd recommend you go with a giant squid to tame them because you can grab them also the basaileosaurus is not the guy to tame this guy in genesis becuase x_mosasaurs they are at a low depth the basaileosaurus can go only a specific depth till it starts to take damage. Also if you dont use a squid make a trap a 2×2 beheamothgate with some gateways in them only put a gateway in the back when the mosasaur is in there

It's actually quite easy to tame, the difficulty for me is actually 4/10.

Find a mosa, usually spawns around Carno Island (Aka The Dead Island), if you can't find one, tidy save but if not kill some leeds and plesios because these are actually the creatures that take the points for a mosa spawn.

Find an nearby ammonite and attack it and then get the mosa to aggro on you and go up to the shallow waters. After the ammonite rage has ended the mosa will still follow you for a while bit eventually it'll stop chasing you and will be stuck due to it passing its barrier. Shoot tranqulizers at it and when its' knocked out feed it narotics/bio toxins and feed it its taming foods (Recommended using a sooting balm and its preferred kibble) . Wait for a while and you'll get it! Goodluck!

For the people vote for this

no scuba gear or any traps but underwater cave allowed but no traps

have an ichy or diplocaulus

ichy:all wild creatures will ignore you if your riding ichy

diplocaulus: help stay you longer in underwater but need less weight

have an acendant crossbow with alot of trand arrows