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The mid-sized platecarpuses are the most common type of mosasaur. They're typically 15 feet long, but larger specimens can grow up to 20 feet. The larger varieties sometimes eat Medium humanoids, but most stick to smaller fare.

Recall Knowledge - Animal (Nature): DC 18

Elite | Normal | Weak
Proficiency without Level

Changes from being Elite are marked in red below.
NOTE: The +2 damage bonus to non-strike offensive abilities (+4 if the ability is limited, such as spells) is NOT factored in.

Elite PlatecarpusCreature 3

Source Bestiary 3 pg. 178
Perception +11; low-light vision, scent (imprecise) 30 feet
Skills Athletics +12, Stealth +13
Str +5, Dex +4, Con +3, Int -4, Wis +2, Cha -2
Deep Breath A platecarpus can hold its breath for 2 hours.
AC 21; Fort +12, Ref +13, Will +9
HP 61
Speed 5 feet, swim 35 feet
Melee Single ActionSingle Action jaws +14 [+9/+4], Damage 1d12+2+5 piercing plus GrabAquatic Drag Single ActionSingle Action Requirements The platecarpus has a creature grabbed; Effect The platecarpus Swims up to half its Speed, carrying the grabbed creature with it.Strafing Chomp Single ActionSingle Action The platecarpus Swims up to its Speed, making one jaws Strike at any point along the way. The Strike deals half damage.Swallow Whole Single ActionSingle Action (attack) Medium, 1d6+2 bludgeoning, Rupture 10

All Monsters in "Mosasaur"



Source Bestiary 3 pg. 178
The massive swimming reptiles called mosasaurs thrash their powerful tails to propel them after prey. Four articulated, webbed paddles let them precisely steer their paths, and their hinged jaws—much like a snake's—allow mosasaurs to swallow larger creatures than their size would indicate. A small set of secondary pterygoid jaws in their gullets pull in their meals for more efficient digestion. As air breathers, mosasaurs must stay near the surface of the water, competing for food with whales. This proximity to the surface means they often capsize small boats, feasting on the crew members who fall out.

Sidebar - Related Creatures The Void Mosasaur

Slowly swimming the boundless seas of the Plane of Water, the Void Mosasaur has become legend to that plane's inhabitants. The creature is ancient, marked with massive gouges and scars, eyes entirely clouded with cataracts, and with a metabolism so slowed that days pass between its heartbeats. Its gullet is so vast that elemental creatures have built permanent homes inside it, using remnants of shipwrecks. Some of these shipwrecks are quite curious, appearing to have come from other planes entirely, and suggesting the Void Mosasaur plied other waters over the course of its extensive life.