1st Edition to 3rd Edition Converted Monster
Converted From: Module X1: “The Isle of Dread” page 31
Converted By: converted_monsters@yahoo.com

Monster Name:	Plesiosaurus	
Type and Size:	Huge beast	
		
Hit Dice:	16d10+80 (190 hp)	
Initiative:	+1	
Speed:	50’ (swimming)	
AC:	13 (+3 natural, -2 size, +2 Dex.)	
Attacks:	1 bite +20 melee	
Damage:	2d6 +8 melee	
Face/Reach:	10’ x 10’ / 15’	
Special Attacks:	Capsize, swallow	
Special Qualities:	Scent	
Saves:	Fort. +10, Ref. +9, Will +3	
Abilities:	Str. 26, Dex. 13, Con. 20, Int. 2, Wis. 8, Cha. 12	
Skills:	Listen +7, Hide +9	
Feats:	Weapon Finesse (bite)	
Climate/Terrain:	Prehistoric Aquatic	
Organization:	Solitary (1) or group (1-3)	
Challenge Rating:	6	
Treasure:	None	
Alignment:	Neutral	
Advancement:	Large (8 HD), Gargantuan (24 HD)	
		
Description:	A plesiosaurus is a fish-eating, lake-dwelling dinosaur, usually about 30-50 feet long.  It has an extremely long neck and a large snakelike head filled with sharp teeth.  This dinosaur has small flippers in place of legs to aid in swimming.	
		
Combat:	Capsize (Ex): A submerged brontosaurus that surfaces under a boat or ship less than 20 feet long capsizes the vessel 95% of the time.  It has a 50% chance to capsize a vessel from 20 to 30 feet long, and a 20% chance to capsize a vessel 30 to 60 feet long.

Improved Grab (Ex): To use this ability, the plesiosaurus must hit a Medium-sized creature or smaller with its bite attack.  If it gets a hold, it can attempt to swallow the foe.

Swallow (Ex): A plesiosaurus can try to swallow a grappled opponent of Medium size or smaller by making a successful grapple check.  Once inside, the opponent takes 1d8+6 points of acid damage per round from the dinosaur’s gizzard.  A swallowed creature can climb out of the gizzard with a successful grapple check.  This returns it to the dinosaur’s mouth, where another successful grapple check is needed to get free.  A swallowed creature can also cut its way out by using claws or a Small or Tiny slashing weapon to deal 20 points of damage to the gizzard (AC 20).  Once the creature exits in this fashion, muscular action closes the hole; another swallowed opponent mus cut its own way out.

The dinosaur’s interior can hold one Medium, 2 Small, 8 Tiny, or 16 Diminutive or smaller opponents.