Giant Sea Horse

Large beast, unaligned
Armor Class 13 (natural armor)
Hit Points 16 (3d10)
Speed 0 ft., swim 40 ft.
STR
12 (+1)
DEX
15 (+2)
CON
11 (+0)
INT
2 (-4)
WIS
12 (+1)
CHA
5 (-3)
Senses passive Perception 11
Languages -
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) bludgeoning 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.

ACTIONS

Ram. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) bludgeoning damage.

Giant sea horses are often used as mounts by aquatic humanoids.
Monster Manual (SRD) D&D 5 › Monsters