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. It the target is a creature, it must succeed on a DC 11 Strength saving throw or be knocked prone.
The sea horse can breathe only underwater.
Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 4 (1d6 + 1) bludgeoning damage.