Sea spawn

Sea spawn are drowned humanoids that have been transformed by powerful sea creatures into enthralled piscine hybrids.

Description
Sea spawn are the result of humanoids that become lost at sea and transformed by powerful creatures that live there, such as krakens, morkoths, or dragon turtles. The most notable of such creatures capable of making sea spawn is Uk'otoa, the leviathan imprisoned beneath the Lucidian Ocean. This transformation makes the sea spawn enthralled to their creator, and are unable to leave the ocean for more than a day.

Sea spawn superficially resemble their previous humanoid form, but are warped with oceanic traits, such as fins and gills, or growths of coral and barnacles. Their forms may include elements of other sea creatures, such as having tentacles, shark mouths, or sea urchin spines. Sea spawn can have any combination of such forms.

Abilities

 * Limited Amphibiousness: Sea spawn can breathe air and water, but must be submerged in the sea once per day for at least one minute to avoid suffocation.
 * Multiattack: The sea spawn makes three attacks: two unarmed strikes, dealing minor bludgeoning damage, and uses its Piscine Anatomy.
 * Piscine Anatomy: The sea spawn uses one of the following attacks:
 * Bite: Deals minor piercing damage.
 * Poison Quills: The target takes poison damage and must make a Constitution save or be poisoned for one minute. It can repeat the save each turn to end the effect.
 * Tentacle: The target takes bludgeoning damage and is grappled.

Known sea spawn
The Mighty Nein encountered sea spawn on two occasions, in both of which they were enthralled by Uk'otoa.
 * Many sea spawn guard the sunken temple of Uk'otoa in Gravid Archipelago.
 * Several sea spawn accompanied three deep scions when they attacked the Balleater, seeking the Cloven Crystal held by Fjord.