Sea Spawn

Medium humanoid, neutral evil

Armor Class 11 (natural armor)

Hit Points 32 (5d8+10)

Speed 20 ft., swim 30 ft.

Senses darkvision 120 ft.

Languages understands Aquan and Common but can’t speak

Challenge 1 (200 XP)

Limited Amphibiousness. The sea spawn can breathe air and water, but needs to be submerged in the sea at least once a day for 1 minute to avoid suffocating.

Actions

Multiattack. The sea spawn makes three attacks: two unarmed strikes and one with its Piscine Anatomy.

Unarmed Strike. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4+2) bludgeoning damage.

Piscine Anatomy. The sea spawn has one or more of the following attack options, provided it has the appropriate anatomy:

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 4 (1d4+2) piercing damage.

Poison Quills. Melee Weapon Attack: +5 to hit, reach 5 ft., one creature. Hit: 3 (1d6) poison damage, and the target must succeed on a DC 12 Constitution saving throw or be poisoned for 1 minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Tentacle. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 5 (1d6+2) bludgeoning damage, and the target is grappled (escape DC 12) if it is a Medium or smaller creature. Until this grapple ends, the sea spawn can’t use this tentacle on another target.