Everybody says to going to the height limit is the easiest way but I will always say this time and time again, USE A SARCO!!! Sarcos are the best way to tame anything under water other than a tuso. They are fast, use no stam, arent the best tanks but can get the job done, and most importantly you can shoot as the rider. Of course a better saddle helps but when in trouble you can outswim anything in the ocean.

More Mosasaurus Taming & KO Tips