Actions

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 7 (1d10 ) piercing damage as well as +2 poison damage, and the target is grappled (escape DC 12). Until this grapple ends, the target is restrained, and the hydrusound can't bite another target.

Tail Whip. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) bludgeoning damage. If the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone.