I was ONE hitted by one single lvl 116 Manta! They are to op! I lost all my stuff including an ascendant crossbow and a journey man Riot Shield! I hate these guys, they are horrible. Now I'm taming a lvl 116 Megalodon. REVENGE!
If you are planning on doing anything involving water prepare to despise these flat horrors. They can out swim you. They can swarm you. They can act friendly and once you turn your back eat your tame. Beware.