Mosasaurus
Water · 18 maps
Overview
The Mosasaurus is a large aquatic carnivore that dominates underwater environments. It excels at hunting and destroying enemy structures, making it a powerful asset in underwater combat. Players tame it to secure oceanic territories and eliminate hostile aquatic threats.
It can be airlifted by Quetzal or Karkinos for fast deployment.
Spawn Locations
18 mapsMosasaurus spawns in oceanic, cave, and dark-zone biomes. It is very commonly encountered and appears across 18 ARK maps. Green zones on the spawn map indicate the highest spawn density.
Each shape is a real spawn volume. Click for exact chance and zone info.
Mosasaurus must be knocked out before taming. The best food is Exceptional Kibble, which provides the fastest taming time. Raw Mutton also works well for players without access to kibble.
Use a Bow or Crossbow with Tranq Arrows to sedate it. About 46 units of Exceptional Kibble are needed. The taming process takes around 73 minutes and requires approximately 434 Narcotics. Use the calculator below for your settings.
| Food | Qty | Time | Effectiveness |
|---|---|---|---|
 Exceptional KibbleBest | 46 | 1:12:38 | 74 Lvl (224) |
 Raw Mutton | 135 | 2:05:00 | 74 Lvl (224) |
 Raw Prime Meat | 169 | 2:36:29 | 73 Lvl (223) |
 Cooked Lamb Chop | 250 | 3:51:14 | 72 Lvl (222) |
 Raw Meat | 505 | 7:47:36 | 65 Lvl (215) |
| +6 more in calculator→ | |||
Drops & Harvest Resources
Killing a Mosasaurus yields Hide and Raw Prime Meat. The Hatchet yields the most Hide.
| Resource |  Pick |  Hatchet |
|---|---|---|
| 40%~82~63 hits | 60%~123~50 hits | |
| 4%~4~63 hits | 4%~4~50 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
Mosasaurus has a strong weakness to SpikeWall damage, taking +400% more damage. This makes spike walls extremely effective in defensive perimeters. It also takes +120% more damage from Instant HurtDinos and +55% more from Melee DmgMetal RaidDino attacks. Avoid using Mining Drill Harvest, as it deals no damage to this creature.
Kill XP
Wild Kill (1.25×)15 base × 15.9 level × 4 × 1.25× wild kill × 1× server
Server Settings(Game.ini)
Official servers use non-1× defaults; the values above already reflect official rates.
Saddle Crafting XP
Base × 1× quality × 4 × 1× server
| Stat | Base (Lv.1) | Wild +/Lv | Tamed +/Lv |
|---|---|---|---|
 Health | 3600.0 | +432.00 | +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 Mosasaurus has a head hitbox that takes 1.5× damage, making headshots effective for faster knockouts. Focus on the head when sedating.
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 | 100 | 550.0 | 300.0 | — | — | — |
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
Mosasaurus Tips & Tricks
The Mosasaurus deals 100 damage with its primary attack, effective against players and light structures.
It takes +400% more damage from spike walls, making it vulnerable in base defenses.
It is immune to damage from Mining Drill Harvest.
It can be carried by flyers such as Quetzal for rapid transport.
This page details the Mosasaurus's stats, taming, breeding, harvest specs, and combat data. Refer to the taming calculator, breeding calculator, and spawn map for further planning.