Do not listen to the person who said that they only eat angler gel, they can only be tamed with angler gel, they will eat meat after tamed. They won't agro on you if your riding an ichty too. Up‌vote

DO NOT BRING IT ON LAND!!!!

(it dies)

This is like a prehistoric jetski

Tame like 20 of them, put them all in a single area, agressive on, wandering on, kill everyone

Bug spray work while swimming near them to tame.

Do not dismount while in midair over sea! Dismounting while in the air will kill it!

Search for one that is on land or close to land almost free kills

Mantas are very quick ocean transport mounts, which also double as a powerful PVP asset. The manta's attack ignore the armour stat, which makes a high melee damage manta incredibly powerful to players and small tames. It's quick speed also allows it to move very fast. It can jump out of the water, but on contact with land, it will begin dying very fast. Very good for travel on the center map, as it can jump over the many islands if it gets a good run up