Alpha Mosasaur
Ignore
Overview
The Alpha Mosasaur is a massive aquatic carnivore found in the depths of ARK's oceans. It cannot be tamed by survivors, existing as a powerful wild predator with no taming mechanics. Its presence poses a severe threat to underwater structures and nearby creatures, often attacking on sight due to its aggressive nature.
It can damage Thatch and Wood structures, making it a hazard in shallow coastal bases.
Spawn Locations
Alpha Mosasaur does not currently spawn on any ARK: Survival Ascended map, or spawn data is not yet available.
Taming
The Alpha Mosasaur cannot be tamed.
Alpha Mosasaur is not tamable.
Drops & Harvest Resources
Killing an Alpha Mosasaur yields Alpha Mosasaur Tooth as a unique drop. The corpse also provides Hide and Raw Prime Meat when harvested. The Hatchet yields the most Hide, while Raw Prime Meat harvest quantity is not affected by tool choice.
| Resource |  Pick |  Hatchet |
|---|---|---|
| 40%~164~125 hits | 60%~246~100 hits | |
| 4%~8~125 hits | 4%~8~100 hits | |
| - | - |
Estimates based on game-extracted data (weights, quantities, harvest multipliers, damage type chains). Each harvest event independently rolls each resource - higher weight = higher drop chance. Actual yields vary with RNG.
Damage Resistances
The Alpha Mosasaur takes +400% more damage from spike walls, making them extremely effective for defense. It also suffers +120% damage from Instant HurtDinos and +55% from Melee DmgMetal RaidDino attacks. Conversely, it has -100% damage taken from Mining Drill Harvest and -50% from Melee WithProjectileImpactFX and Ranged Turret Small DefensePlant.
Kill XP
Alpha Kill (1.33×)1600 base × 15.9 level × 4 × 1.33× alpha kill × 1× server
Server Settings(Game.ini)
Official servers use non-1× defaults; the values above already reflect official rates.
| Stat | Base (Lv.1) | Wild +/Lv | Tamed +/Lv |
|---|---|---|---|
 Health | 54000.0 | +6480.00 | +3.50% |
 Stamina | 400.0 | +40.00 | +2.00% |
 Torpidity | 3000.0 | +180.00 | +0.00% |
 Food | 8000.0 | +800.00 | +2.00% |
 Weight | 1300.0 | +26.00 | +0.80% |
 Melee Damage Multiplier | 100.0% | +5.00% | +10.00% |
 Speed Multiplier | 100.0% | +0.00% | +0.50% |
Hitbox Multipliers
The head of the Alpha Mosasaur has a damage multiplier of 1.5x, making it the optimal target zone for maximum damage output. All other body zones take standard damage.
Can Damage
Can break Thatch and Wood. Build at least in Stone.
Thatch
Wood
Stone
Metal
Tek| Attack | Base | Thatch | Wood | Stone | Metal | Tek |
|---|---|---|---|---|---|---|
| Attack 1Carnivore Large | 200 | 1100.0 | 600.0 | — | — | — |
Numbers reflect base melee at level 1, 100% TE, no imprint. The damage calculator lets you scale by melee %, server multipliers, and pick a specific structure for exact hit counts.
Tools & Guides
Alpha Mosasaur Tips & Tricks
The Alpha Mosasaur takes 400% more damage from spike walls, making them ideal for coastal defenses.
It is highly vulnerable to explosion-based damage, taking 50% more from demolition sources.
Melee attacks with metal properties deal 55% more damage, useful for raiders using metal weapons.
It is immune to mining drill-based damage, rendering such tools ineffective.
This page details the Alpha Mosasaur's stats, damage modifiers, harvest drops, and structural threats. For further data, refer to the taming calculator, breeding calculator, and spawn map tools available on the site.