Alpha Mosasaur
Alpha Mosasaur Overview
Survivors looking at Alpha Mosasaur in ARK: Survival Ascended will find an aquatic carnivore that roams the ARK as a wild, untamable creature. Alpha Mosasaur cannot be tamed through conventional methods and is encountered with 54,000 base Health - extraordinarily tanky. It gives live birth after a gestation period, with offspring maturing over an extremely long period, one of the longest in the game. Once tamed it harvests Hide, Raw Prime Meat more efficiently than most player tools. That combination of survivability and damage is why Alpha Mosasaur sits on most endgame mount shortlists.
Spawn Locations
Alpha Mosasaur does not currently spawn on any ARK: Survival Ascended map, or spawn data is not yet available.
Taming
Alpha Mosasaur is not tamable.
Breeding
Open Calculator →XP Calculator
Full Calculator→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.
Drops & Harvest Resources
You can gather Hide, Raw Prime Meat from a Alpha Mosasaur corpse. The corpse has 4,000 harvest health, allowing multiple hits before it's fully depleted.
Different tools yield different quantities - check the table below to pick the right tool for the resource you need. Generally, a Pick favors meat while a Hatchet favors hide and secondary materials.
| 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's damage profile includes 14 modifiers that alter how much damage it takes from different sources. With 7 resistances and 6 weaknesses, its biggest vulnerability takes +400% extra damage - exploit that for faster kills. See the full breakdown in the table below. Values under 100% indicate resistance, above 100% indicate weakness.
Base Stats
Full Stats→| 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
Aiming matters - the Alpha Mosasaur has 1 hitbox region with distinct damage modifiers. The Head is the most vulnerable spot at 1.5x damage - aim there for maximum DPS.
Can Damage
Open damage calculator →The Alpha Mosasaur can damage: Thatch, Wood. It can break through Thatch and Wood, so upgrade to Stone at minimum for protection.
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
Check out what other players have learned about the Alpha Mosasaur - and contribute your own tips.
Welcome to the full Alpha Mosasaur guide for ARK: Survival Ascended. Here you can quickly review its stats, taming requirements, breeding info, and resource gathering potential, then dive into our detailed calculators and maps for more depth.
The Alpha Mosasaur starts with 54,000 base Health, 100% base Melee Damage, 1300 base Weight. These base values scale with each wild and tamed level-up, so check the taming calculator to see exactly what stats you can expect at different levels.
The Alpha Mosasaur gives live birth after a gestation period. Babies mature in 7 days and 17 hours. Check the breeding calculator for detailed imprint schedules and raising costs.
Once tamed, the Alpha Mosasaur can harvest Hide, Raw Prime Meat. Visit the information tab for the full harvest table with quantities and efficiency data.