Plesiosaurus

Large beast, unaligned Armor Class 13 (natural armor) Hit Points 68 (8d10 + 24) Speed 20 ft., swim 40 ft.

STR DEX CON INT WIS CHA

18 (+4) 15 (+2) 16 (+3) 2 (−4) 12 (+1) 5 (−3) Skills Perception +3, Stealth +4 Senses passive Perception 13 Languages — Challenge 2 (450 XP) Hold Breath. The plesiosaurus can hold its breath for 1 hour.

Actions

Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (3d6 + 4) piercing damage.