They seem intimidating, but they're surprisingly an easy tame. Personally what always worked best for me was attracting them to shore, placing a bunch of dead dodos on the shoreline. The shark would get stuck in the ground, then I would use a long rifle with tranq darts and shoot it in the head.
These are actually really easy to tame. Find one and lure lure it closer to the shore and then just stand on land where u are safe and keep shooting it. Make sure there are no other sharks or mantas that can hurt you while taming your shark. Good luck