To kill,

1. Tame argy and craft saddle.

2. Sight a plessi. You can do this by using CrabCam (swipe left) to see underwater.

3. Drop Cooked Prime Fish Meat into plessi territory from argy.

4. The plessi will grab it.

5. Now's your chance! Dive towards the plessi and grab it with your argy.

6. Put the plessi on land, specifically on a hill, so it cannot flop into the water.

7. The plessi will die.

8. Now get off the argy.

9. Use your hatchet.

10. Harvest the plessi's corpse.

11. Now comes my favorite step: open its item cache and see what you got!

12. Is anything useful? Stimberry? Narxoberry? Notice if it is useful.

13. If there is helpful things in the plessi's inventory, then you should consider repeating the process on another plessi.

Up if you find it useful!

The dossier says they're passive to humans and only attack little fish THIS IS NOT TRUE THEY WILL EAT YOU AND THEY TEAM UP WITH ELECTROPHORUS TO KNOCK OUT YOUR MOUNT AND SHARE IN THE FEAST AFTERWARDS!!

You're gonna need about three fiddy, then this beast will let you go.

This has to be the most terrifying creature on ark. I've tamed one and it still makes me piss my pants when i see it.

Whoever said plesiosaurs are the quetzals of the ocean clearly has never tamed a mosasaur

Once one of my fav water dinos. Now that face haunts my dreams 😳

These are not "pleasuresaurs" as I soon found out =/

I found 4 at once on mobile, near the north east island and killed all 4 with my itchyosauraus

Best day ever

Just found one and named him nessy and he just got killed by like 13 megs

Any mobile players out there, there aren't any underwater caves so these guys are just commonly in the deep.

These guys lurk near Caves or deep waters, and won't follow up all the way up (unlike Tuso in mobile 0.0)

Get a fast creature that can surface quicker and wait for the Pleis to follow you until it loses interest. Use a crossbow with tranq arrows (or shocking arrows) for yopor. When it flees, keep doing it until unconscious. I use Sarco and Basilo for mine, and kept feeding both prime fish meat and BIO Toxins (for topor).

You're welcome world.

If you are being chased by a plesiosaur,then swim up to the surface.like the mosasaur,the plesiosaur does not swim over a certain depth limit and is never seen at the surface(bit weird since they need to breathe,right?)

Plesiosaurs will team up and try to kill you

I have seen some people ask where to find em you have to go away from the shoreline and keep going down the only thing you will find In the blank sea is a few megs and ichys

These Guys Will eat your Barry anytime of the day so watch out while exploring to an underwater cave

The real weapon of these bad boys is it’s face. DO NOT GO CLOSE! it’s so ugly it’s nightmare fuel.

I found one and named it tony it is our best boy

Not once in all my time on the ark have I seen one alone, there are always two, unless you've already killed one, so watch out when taming, kill one and tame the other or tame both, just remember when you find one that another is probably nearby, ready to tear you to shreds.

WHERE DO YOU FIND THESE!?!? I’ve looked in every ocean and all I’ve found are piranhas and itchys

I must say when I first saw one... Well let's put it this way the dodo I had for breakfast made a reapearance.🤮 They are very creepy faces!