Always, always, make sure you bring at least a couple of oxygen tanks when taming one. If you unfortunately knock one out near the bottom of the ocean, it is a pain to tame when your tank breaks....

Eat a rage flower near the plesiosaur. Then swim up to the top of the ocean it won’t be able to hit you. Because it’s so high up then what it is suppose to come up to. Just be careful of nearby fish and other Dino’s when using the rage flower.

The method i used was to aggro him and use a Basilosaurus(big whale) and go to the surface where he will just keep reggening and while the plesiosaur is focused on my Basilosaurus i just get out my crossbow and pelt him with arrows

If trying to tame one make like a wyvern trap on the bottom on the ocean and hive someone else shut it. I use a sarco to lead it in the trap. On the center you can make the trap right next to the air bubble to escaped in the Airr away from any attack range and have a keypad to shut it.

Mutton consumption is WAY off, BRING MORE MUTTON THAN RECOMMENDED

If you’re on the center, go to the east water dome. There’s a small gap of water between the dome and the rest of the ocean where sea creatures can’t reach. The tricky part is when it starts running away after reaching a certain torpor level but this makes it a little easier.

When I tamed mine it seamed to love swimming into rocks so I just filled him with tranq arrows and killed all the anglerfish.

Give yourself 160% movement speed and some flippers and it’s an easy tame just chase it around till it goes to sleep.

There is a glitch where if you aggro a group of Ples, they will spawn new Ples as well. I went farming for a high level one, ended up having 30 in 1 area that I just had cleared out.

Make a taming pen at the bottom of the ocean near a plesiosaur spawning place made of stone 7x6x6 with sealings,foundations,doorframes and a behemoth stone gate.Then use a tough underwater mount to kill the plesiosaurs you don't want, because they spawn in groups of 2 or 3.After that kite the last one into the pen,get out using a doorframe,close the behemoth door and you can hit it easily.Use this strategy to tame plesios and even harder dinos like mosasaur.

If you're on the Center there's multiple spots where plesiosaurs are glitched and can't move. One is at the redwood forest shoreline near a rock and the other is somewhat in the center islands underwater. The second one has one on top of the other so kill one or tame both.

Use a fast mount to lure it to a trap as to avoid it from running to the depths again. Oh and use scuba gear

If you are on mobile, just get a rex kibble and a soothing balm, knock one out, feed it, then swim up and wait!

These beasts are one of the top predators in Ark get your good old tranq gun and fish meat to have your own plesiosaurs well done :)

If you havn't made an underwater trap get a high level sarco pump health put a good saddle on it and tranq it off the back of the sarco as you can have you crossbow out while mounted

I just swim above them.Then i shoot down with a tamed megalodon near by.you can out maneuver them as long as you're above them.

They look like backwards mosas.

These poor misunderstood plesiosaurs. When they go up to you, they try to give you a kiss but their huge teeth kill you instead. When taming, be sure to use the invisible depth barrier. They will only go up towards the surface if they are tamed.

Lessen ive learned,a acendent saddle doesnt help against 20+ megalodons.

If u have tuso grab it and take it to some behemoth gates, if u dont just hover above it and shoot it and chase it if it runs away