Very easy to tame if you know what your doing. First tame an Ichthyosaur. Then grab a crossbow and some tranq arrows and find one and knock it out. It is not be able to attack if you are on the Ichthy. As you are taming it, be sure to remain on the Ichthy unless feeding narcs, so other creature don’t hurt you.

Anyone else surprised that their not hostile

Bring more tranq arrows then you think! Mine took 100 at close range, on the body, at LEVEL 3.
I took cooked prime meat (stays better longer) and got mine in only four feedings. On an icthy they don’t chase (mobile player here) happy taming- Survivor Belle

These are one of the few dinos that take less damage/topour from head shots. Aim for the body.

When it says 1.7% chance of death. It means it's going to die.

How do you tranq one I'm on mobile and it ma re me brake my crossbows twice

A easy tame but be sure to bring lots of tranq arrows it took me 79

Took me over 150 tranqarrows with a 400% crossbow to ko an X-Dunkleo... what a pain lol

If your on ark mobile grab a crossbow (a good one) a good underwater tame and the scuba set so you don't drown.i finnaly tamed a plesi with this method and now it's time for taming the dunki (I am coming armoured shark)

Found one. Taming with raw fish. For some reason, though, it ran away from me on the first hit.