If your rich enough to afford yourself a mindwipe freely. Mindwipe nearly all into oxygen. Grab a scuba set and a Lazarus chowder (for stamina) they are easy to kite up and down the invisible sea barrier and they will never catch you if your careful, start by eliminating angry mate booster for an easier time. If using primitive gear, a spare crossbow is not a bad idea.
These guys are great and super fast and also very strong. Warning when your gonna go tame these guys bring a sarco or an icthy , they also spawn In 2,s or 3,s so be careful because these guys do a crap ton of damage .
They can't fit through the resource caves' entrances. Just lure it into one and pull out your crossbow/harpoon gun for the knock out. Just be aware of any nearby megalodons, as they can fit into the cave easily and ruin your swimming session.