Giant Sea Horse

Large beast, unaligned

Armor Class 13

Hit Points 16 3d10

Speed Swim: 40ft

STR

12 +1

DEX

15 +2

CON

11 0

INT

2 -4

WIS

12 +1

CHA

5 -3

Senses passive Perception 11

Challenge 1/2 (100 XP)

Charge. If the sea horse moves at least 20 feet straight toward a target and then hits it with a ram attack on the same turn, the target takes an extra 7 2d6 damage. If the target is a creature, it must succeed on a DC 11 Strength saving throw or be knocked prone.
Water Breathing. The sea horse can breathe only underwater.