Logo Mobile.svg 1.0
May 24, 2018
Spawn Command

cheat summon Plesiosaur_Character_BP_C
cheat SpawnDino « Blueprint’/Game/PrimalEarth/Dinos/Plesiosaur/Plesiosaur_Character_BP.Plesiosaur_Character_BP' » 500 0 0 35
Variant Plesiosaur (Escort)
cheat summon Plesiosaur_Character_BP_Escort_C
cheat SpawnDino « Blueprint’/Game/Genesis/Dinos/MissionVariants/Escort/Ocean/Plesiosaur_Character_BP_Escort.Plesiosaur_Character_BP_Escort' » 500 0 0 35
Variant Plesiosaur (Retrieve)
cheat summon Plesiosaur_Character_BP_Retrieve_C
cheat SpawnDino « Blueprint’/Game/Genesis/Dinos/MissionVariants/Retrieve/Ocean/Plesiosaur_Character_BP_Retrieve.Plesiosaur_Character_BP_Retrieve' » 500 0 0 35


X mark.svg No

Baby Time

11h 34m 26.667s

Juvenile Time

1d 22h 17m 46.667s

Adolescent Time

2d 9h 52m 13.334s

Total Maturation Time

4d 19h 44m 26.667s

Breeding Interval

18h – 2d



The Elasmosaurus (el-lazz-mo-sore-us), more commonly known as the Plesiosaur (PLEE-see-uh-sore), is one of the marine Reptiles in ARK: Survival Evolved.

Basic Info[]


This section is intended to be an exact copy of what the survivor Helena Walker, the author of the dossiers, has written. There may be some discrepancies between this text and the in-game creature.



Elasmosaurus remuspissa


Late Cretaceous






Elasmosaurus remuspissa is typically found in the deep oceans, and has a strange role in the oceanic food chain. It almost exclusively hunts the smaller creatures in the waters, leaving most even moderately large creatures alone. The sheer size of the Elasmosaurus means that the quantity of food it must eat to sustain itself is nothing short of enormous.

Elasmosaurus is a formidable fighter. Aside from the Megalodon, I have only ever seen two creatures bring down an Elasmosaurus: a Mosasaurus, and human beings. Though I will admit, I have yet to thoroughly explore the staggeringly deep underwater caverns surrounding the Island.


Much like the Brontosaurus on land, Elasmosaurus is an excellent way to transport large quantities of goods over water. These powerful creatures are in fact so large that they can be used as mobile water bases. Ambitious tribes sometimes build bunkers right onto the backs of Elasmosaurus instead of building cargo ships.


Plesiosaurs swim around in groups of two or three in the depths of the ocean, never surfacing. They are aggressive and have a fairly large aggro distance. They start to attack and will follow them for a short distance; they lose interest if it swims too far up.


The Plesiosaur has an almost teardrop-shaped body. Its size, long neck, and four whale-like flippers make it unmistakable for any other creature. The neck itself makes up half of the creature’s length, and the mouth is lined with many sharp teeth. Commonly found in pairs, this large marine reptile hunts in the island’s deeper waters for fish and squid, working as a team to corral their prey. Despite their size and often camouflaged coloration, Plesiosaurs are sometimes preyed upon by other large marine predators and, occasionally, adventurous Spinosaurus heading out from the coast.

Color Scheme and Regions[]

This section displays the Plesiosaur’s natural colors and regions. For demonstration, the regions below are colored red over an albino Plesiosaur. The colored squares shown underneath each region’s description are the colors that the Plesiosaur will randomly spawn with to provide an overall range of its natural color scheme. Hover your cursor over a color to display its name and ID.

This information can be used to alter the Plesiosaur’s regions by entering cheat SetTargetDinoColor <ColorRegion> <ColorID> in the cheat console. For instance, cheat SetTargetDinoColor 0 6 would color the Plesiosaur’s « body » magenta.


Base Stats and Growth[]

Base Speed Sprinting Speed Stamina
Wild Tamed1 Tamed2 Wild Tamed1 Tamed2
Walking 800 ? ? ? ? ? 20
Swimming 800 ? ? 1200 3600 3600 3
  • 1These are the base speeds of the creature at 100% Movement Speed.
  • 2These are the speeds of the creature tamed and non-imprinted.
  • For a comparison of the speeds of all creatures, see Base Creature Speeds.
Attack Values
Bite Stamina Cost Attack Range Description
Base Minimum Activation Using the Left Mousebutton (PC), R2 Button (PS), RT Button (Xbox One), the Plesiosaur bites the target.
0 2000 0 2300
Attack Type Damage Projectile Values Torpor Values Status Effect: Stamina Status Effect: Torpidity
Life Impulse Radius Base Mult Duration Damage Mult Amount Duration Damage Mult Amount
Melee 75

Wild Stats Level-up

Type in values of a wild creature to see on which stats it’s emphasized. Green values on a high-level creature are very good for breeding. If you have already tamed your creature you can try to recover the breeding stats with an external tool.[1]


The stat-calculator does not work in the mobile-view, see here for alternatives: Apps

Note that after the creature is tamed it gets bonuses on some stats depending on the taming effectiveness. This makes it hard to retrieve the levels on a tamed creature, so this tool is only for wild ones, but gives a first impression, how well the stats are distributed.


This section describes how to fight against the Plesiosaur.


It is recommended to fight in a group against a Plesiosaur. If alone, a powerful water mount or SCUBA Flippers can be invaluable. Remember that there will be two and possibly more(so far, the highest recorded amount around a single sea cave has been six individuals) attacking, so keep this in mind.


As the Plesiosaur will only reach up to a certain height, you may be able to swim above where it won’t reach and shoot down. Make sure during a battle that other creatures in the water do not attack as well. Megalodon and Dunkleosteus in the area will prove deadly and a Mosasaur can ruin the adventure if it is gone unnoticed.

With SCUBA Flippers it is easy to keep swimming above it and it will only rarely take a hit on you.


The crossbow is recommended for ranged attacks, as it can be fired underwater. Melee weapons can be used, but are not recommended due to the Plesiosaur’s attack range and AOE (Area Of Effect). A melee battle will almost always end in the Plesiosaur’s favor. Overall the best weapon to use is the harpoon launcher as it has the specific purpose of killing/tranquilizing underwater creatures.


As a larger creature, the Plesiosaur has a bigger attack range, giving it a melee advantage. Try using crossbows/harpoon when attacking it. Beware of other creatures in the area. Staying too close to the sea floor can expose the player to the poisonous sting of a Eurypterid, which neutralizes the player completely. Such a hindering leads to certain death.


Although very large, the Plesiosaur can be weak if trapped inside cave mouths. This can be useful for both killing it or taming it.


For general info about domesticating a wild creature see Taming.

KO Strategy[]

The taming of the Plesiosaur is by far one of the most difficult in the game. Generally, the Plesiosaur’s level seems to create an extreme difference in the resources required to tame. Due to their very fast torpor decrease, you need a large amount of narcotics to keep a Plesiosaur unconscious. It should be noted that bio toxin would be more effective at keeping the creature down, and given the locale of most Plesiosaurs (deep ocean mostly) obtaining bio toxin (from Cnidaria) is at least somewhat feasible, utilizing a sea mount that has a good sized attack box (Mosasaurus being No.1 choice) or use a Basilosaur as it is immune to status effects just be careful of your depth as the Basilo will continually take damage.

Bows and guns will not work underwater and wild Plesiosaurs will not swim to the surface of the ocean, so you will need to either use a crossbow or lure the Plesiosaur into a cave where they can surface.

Another technique is to use the crossbow and attack the Plesiosaur from above. They seem to lose interest in you when you’re near the surface, this allows you to take shots at them while still moving far enough away to make them lose interest. Repeat this process and you should be able to knock it out without much issue. This still leaves the risk of Megalodons and other Plesiosaurs attacking you and your tame, though, so be cautious.

It is also recommended to have a raft with some storage boxes and beds floating above the spot where you are planning to tame a Plesio in case you need to respawn after dying, or you want to store your narcotics and other valuables you don’t want to lose. However, beware of the mighty leedsichthys which can destroy a raft extremely quickly, caution is advised.

If you lure one to an underwater cave, you can stand inside the cave where you can breathe air and tranq it safely.

Taming Food[]

Note that the values are for optimal cases, always bring extra supplies!
For a level-dependent count of resources needed, try an external taming calculator.

Ingredients for  Superior Kibble:
2 ×  Citronal, 1 ×  Prime Meat Jerky, 1 ×  Large Egg, 5 ×  Fiber, 2 ×  Rare Mushroom, 1 ×  Sap,  Water





For information pertaining specifically to the real-world Plesiosaur, see the relevant Wikipedia article.

  • Despite being able to use a  platform saddle it cant have  Vacuum Compartments built onto it meaning unless you have  SCUBA Gear you will drown.
    • this is even weirder when you take in the fact that in both its dossier and  platform saddle description both state it can have bases built on it but in game it’s not the best use of the  saddle due to the risk of drowning.
  • The Plesiosaur was the first aquatic tame to have a  platform saddle.
  • The Plesiosaur was the second creature added to Ark in the same update as Icthyosaurus
  • The generic name means « thin-plate lizard ». The specific name appears to be intended to mean « thick oar » (referring to its flippers), but is incorrectly constructed and of the wrong grammatical gender; the correct form would be spissiremus.
  • The dossier for Elasmosaurus actually mentions the underwater caves found in the game. This also seems to indicate that there are even more fearsome creatures in the depths of the caverns.
  • Due to its enormous size the taming time is extremely long in which it is susceptible to enemies like  Megalodons. They might also lower the effectiveness due to possible inflicted damage.
  • Plesiosaurs always drop  Fireworks Flaregun Skin when killed.
  • Plesiosaurs are pretty rare to find but they are usually near the underwater caves, in numbers varying from about 1 – 4.
  • Despite the dossier stating it leaves most creatures the size of  Humans and larger alone, it is common for them to attack  Megalodons and other creatures on sight.
  • Before the introduction of the  Crossbow, plesiosaurs were usually kited into an underwater cave so that they could be tranqed.
  • The name ‘Plesiosaur’ refers to a large group of animals that ruled the seas from the Jurassic up to the end of the Age of Reptiles. Genus Elasmosaurus thrived in the shallow seas that covered the central United States during the Late Cretaceous period.
  • The Dossier says that the  Megalodon is the only predator of the Plesiosaur, though the latter is mostly stronger.
  • the Dossier states that « Have yet to explore … The underwater caves » directly after talking about predators of the Plesiosaur. This could have been referencing the  Mosasaurus and the  Tusoteuthis.
  • For players who actually read the dossier rather than just the text on mobile, they can notice that the text says that a  Mosasaurus can kill a Plesiosaur, when in fact the dossier says that a  Spinosaurus that found its way into the deep killed a Plesiosaur.
  • Until v263.0 Plesios always spawned with a minimum level of 35.
  • Plesiosaur dossier’s temperament was « Docile » before changed into « Aggressive »
  • Plesiosaur do not produce  Feces.
  • Real reptiles, including all aquatic ones, can breathe air but Ark’s Plesiosaur does not need  Oxygen.
  • Real Elasmosaurus were only half the size portrayed in the game, reaching nearly thirty feet in length which is still reasonably large.
  • The power and strength of Elasmosaurus are heavily exaggerated in the game, as in reality their slender form and anatomy would not have allowed them to put up a fight. They preyed on fish and fell prey to sharks and marine reptiles in their ecosystem.




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