Mosasaurus preview
Mosasaurus preview
Basic Information
Real Creature.png Real Creature

Mosasaurus hoffmanni

Nature.png Nature


Health Points.png Health Points

Adult: 70 70hearts.png

Infant: 12 (12hearts.png)

Attack Damage.png Attack Damage

Land Attack: 18


Water Attack: One Hit Kill

( ≥ 20hearts.png)

Hunger Points.png Hunger Points

125 125hunger.png

Breaks Blocks.png Breaks Blocks



Grid Raw Aquatic Meat.png Raw Meat

Grid Mosasaurus Skull.png Skull

Grid Leg Bone.png Leg bone

Grid Arm Bone.png Arm bone

Grid Aquatic Foot.png Foot

Grid Ribcage (Bone).png Ribcage

Grid Vertebrae.png Vertebrae

Grid Mosasaurus Tooth.png Tooth

Modeled By Raptorfarian
First appearances


8.0.4 UPDATE

Mosasaurus ('moe-za-sawr-us,' meaning "Lizard of the Meuse River") is a huge carnivorous prehistoric marine reptile that was included in the original Fossils & Archeology mod. They are diurnal (meaning active throughout the day and will sleep at night, though they only seem to be able to sleep while on land), the only mosasaurids in the mod, and are currently the largest marine animals in the game. They are approximately 12 blocks long and 1.7 blocks tall, and there is no size difference between males and females, but males do have a much darker blue texture whilst females have a more greenish color. Newborns are two blocks long, have the same model as an adult, and are fully grown in 11 minecraft days. They, like the other apex predators, cannot be given essence of chicken to age rapidly.

Mosasaurus, like almost all other mobs, has a mood that can drop or be raised through various means. Having a low mood means it may attack or avoid you, having a high mood will make it neutral. Mosasaurus requires a high mood to not attack the player on sight. Right-click it with a DinoPedia to see what its mood is at.

A fossil version of the mosasaurus can be created by right-clicking a bio-fossil on the ground, which will create a random skeleton of a Mesozoic-era prehistoric creature with a small chance of it being a mosasaurus.

Like almost all other mobs in the mod, they do not spawn naturally in the world and must be created by the player through the culture vat. As they are aquatic reptiles, they hatch instantly from egg sacs that need to be placed in water.


Mosasaurus are extremely aggressive purely aquatic reptiles that can only live in water. Even when first born, they are hostile to the player, and cannot be tamed until adulthood (see below). Mosasaurus cannot move at all on land, but will not suffocate if left there, as they breathe air. They require a water tank of at least twenty blocks across and three blocks deep to swim properly, but keep in mind, they can break blocks weaker than iron (except for reinforced glass and dense sand). Their block breaking ability can often make them stuck, as the water may flow into the hole and trap the mosasaurus in the current. They can be very fast when in water.

They have a special attack when they grab the player or another animal, and shake the prey around in its mouth, dealing constant damage until the victim is dead. They are able to kill almost all mobs in a single hit. When they do hunt, they will attack the aquatic alligator gar, coelacanth, henodus, ichthyosaurus, liopleurodon, nautilus, plesiosaurus, and sarcosuchus, sturgeon, as well as squid. They are also capable of attacking terrestrial animals that enter its waters, including all vanilla animals, hostile mobs such as zombies, the allosaurus, ankylosaurus, ceratosaurus, deinonychus, gallimimus, mammoth, tyrannosaurus, and many more. The only creature capable of killing an adult mosasaurus is the spinosaurus, due to its one hit kill attack.

Adult mosasaurs can breed and lay egg sacs every five minutes if there is a male and female present. These egg sacs need to be picked up by the player and right-clicked on water to hatch. The breeding probability is handled by how many individuals are nearby.


A beaten mosasaurus, in front of an aquatic scarab gem.

The mosasaurus is one of the eight apex predators that use the special taming method. In order to tame a mosasaurus, the player must wait until it is fully grown (11 minecraft days), and bring it down to 8hp (4 full hearts, check the DinoPedia for its health to make sure you don't kill it), where it will then enter a sleep like state. It is recommended to use a potion of water-breathing to prevent drowning. Upon defeating the predator, the player must then right click the mosasaurus with an aquatic scarab gem, which will make it tamed to the player and bring it back up to full health. They can be ordered to either wander, stay, or follow the player with skull sticks, though the stay command does not appear to work.


Adult mosasaurus are rideable upon being tamed. They can be ridden by right-clicking it with a whip, which will allow you to mount its back. When ridden, they won't become hungry, won't age, and will not sleep. They are extremely fast and agile when in water, but are very slow when on land or on the ocean floor. They also do not seem to be able to break blocks when being ridden, which can make the mosasaurus become stuck. It can be controlled only if the player constantly holds the whip, and can only be controlled for a short time without it. Riding uses the same WASD format as normal Minecraft movement, and shift to get off. When in water, look up and down to go in that direction.


Mosasaurus are self-sufficient independent carnivores who will hunt out and eat the aforementioned mobs. The best live-food candidate is the prehistoric fish, as they spawn naturally. They can be hand-fed any type of vanilla or mod meat (except for rotten flesh), all kinds of fish (including fish spawn), and Sio-Chiu-Le. They cannot eat from feeders with meat in them.


Mosasaurus Idle 1
Mosasaurus Out Of Water 4
Mosasaurus Idle 2
Mosasaurus Hurt
Mosasaurus Out Of Water 1
Mosasaurus Attack
Mosasaurus Out Of Water 2
Mosasaurus Death 1
Mosasaurus Out Of Water 3
Mosasaurus Death 2



Defense Points.pngFire Ball.pngAllosaurusDefense Points.pngAnkylosaurusDefense Points.pngBrachiosaurusDefense Points.pngCeratosaurus
CitipatiCompsognathusDeinonychusDilophosaurusDefense Points.pngDiplodocusDryosaurusGallimimusOrnitholestesPachycephalosaurusDefense Points.pngParasaurolophusDefense Points.pngFire Ball.pngSpinosaurusDefense Points.pngStegosaurusDefense Points.pngTherizinosaurusDefense Points.pngTriceratopsDefense Points.pngFire Ball.pngTyrannosaurusVelociraptor

Aquatic Creatures

Alligator GarCoelacanthCrassigyrinusDiplocaulusHenodusIchthyosaurus
Defense Points.pngLiopleurodonDefense Points.pngFire Ball.pngMegalodonMegalograptusDefense Points.pngFire Ball.pngMosasaurusNautilus




Defense Points.pngElasmotheriumDefense Points.pngMammothDefense Points.pngMegalocerosPlatybelodonSmilodonQuagga



Land Reptiles and Proto-mammals

Fire Ball.pngMegalaniaDefense Points.pngFire Ball.pngSarcosuchusEdaphosaurus






Fire Ball.pngAnuAnubiteDead BonesDefense Points.pngFire Ball.pngEaster Egg MobFailuresaurus
Sentry PigmanTar Slime


Archaeologist VillagerFossil ModelPaleontologist VillagerTamed Zombie Pigman

Carnivores appear in red. Herbivores appear in green. Omnivores appear in light blue. Piscivores appear in dark blue. Enemies/misc appear in brown. Defense Points.png means the creature can break blocks. Fire Ball.png means the creature is an apex predator/boss.
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