Almost anything but a Baryonyx is prone to die if left alone with a swarm of Mantas, including Plesiosaurs, Basilosaurs and Tusoteuthis. In the wild, those creatures are the third fastest you can encounter and will ignore armor when attacking. Absolutely letal if combined with Cnidaria.

They are notably common on The Center, to the point where you can clear a shore and only let the one you want to tame but still get up to three following you to your trap once you decide to lure it.

More Manta Encountering Tips