It's not too hard to tame one of these if you have a deep sea taming pen/raft (it's possible! I'm surprised too). Just be wary of that bite it packs a punch. Lured it in the cage with some barys bred for speed and had a tribemate seal it in. Be prepared to wait a while and bring plenty of quetzal kibble or mutton if you can.

Tranq this creature from above their depth limit. They will run away as their topor increases so bring a Megaladon or a Mosa if you somehow managed to get one.

Easiest method to KO - Grab the mosa with a tuso and bring toto shallow waters. There you can get a tribe mate to KO it, or if you're solo like me, you can drop the mosa and if the water is shallow enough it will stay still and it's an easy KO

Does not attack you in really shallow water

Tip for knocking out grab with tuso then have your friend shoot it with traqs

I find it easiest to build a trap using 4-5 behomoth gateways (arranged parallel to eachother in a “rib cage” like formation with 2 gates on either end, leave a little space between just enough to slip through with an Icthy or Megalodon) in order to tame a Mosa, simply leave one side open to lure the Mosa through before speeding behind it and shutting it in.

Bring lots of bolts and/or arrows and a healthy amount of narcotics because its topor depletes fast.

Hi didn’t know where else to put this but everyone always does looking for pearls underwater just go to herbivore island on the island map it has dozens on the beach I got 1075 in like 5 minutes

I tamed my Mosasaurus with a Sarcosuchus. The Sarco was very fast and was able to instantly regenerate stamina underwater. I was able to shoot tranquilizer arrows from the Sarco’s back. I also used a SCUBA tank so I didn’t have to surface in order to breathe. The Mosasaurus was level 6 when it was wild. I was on mobile, so I took a soothing balm, gave it to the Mosasaurus, gave it some meat, and used about 100 narcotics. With the soothing balm, it only took about 11 meat to tame. He now sits in the water right by my raft and has to defend himself from sharks every once in a while.

Grab with a tuso while a tribe mate tranqs it for an easy tame

If trying to tame one make like a wyvern trap on the bottom on the ocean and hive someone else shut it. I use a sarco to lead it in the trap. On the center you can make the trap right next to the air bubble to escaped in the Airr away from any attack range and have a keypad to shut it.

Have someone on a plesi with high health tank the bites from the mosa and have however many other people you have tranqing it. Thats how we tamed our 150 :)

The x-mosa crossbow tranq amount is way out. On official i had to use an extra 100 tranqs for a lvl 90. Bring alot of extra arrows.

If you can’t find one, just go to their spawn locations and kill everything there until one spawns. Hopefully this helps :)

Alpha. First one I saw, first expidition into the deep. I killed it after it killed my 2 level 60 mantas. Got on the shore and shot with assault rifle.

Found one deep in the very bottom right of the map near herb island, be careful of jellies and those eels.

best way to tame this thing get a low lvl squid with points on health hold the mosa with squid and go up and wait 15 the mosa ko by the way if you get the mosa up the mosa will leave you and not attack you just wait the mosa ko if you find this help rise it

If you want to fight it without one I’d suggest housing a high level balli and when your low swim up

Your best bet will be farming hunters cave for 10x soothing bam and then using a good crossbow to take down a mosasaurus and then feed it prime meat I would say use a dolphin to do that so the other creatures don't attack you and it will easy as hell.

The turn radius of the Mosasaurus is huge so you can easily swim around and avoid the mouth while pelting them with tranq arrows.

Who tamed this thing with cooked fish meat, because they are the green ninja.