"A fanged mouth rears from the water, big enough to bite a boat in half or swallow a pig! The 'woman' contorts and slides into the water: she's the tip of the monster's tail. This will be untidy."[3]
Siren-Serpents, known scientifically as Serpentus sirenesis,[2] are serpentine creatures who menace the Unterzee. They possess sharp teeth, bullet-resistant skin, and maws large enough to swallow pigs whole.[4][5] They are most infamous for their preferred means of hunting: they disguise their tails as humanoid apparitions and produce human-like calls to lure those nearby.[6][7] For this reason, the Siren-Serpent is known vulgarly as Neptune's Harlot.[1]
Siren-Serpents lay their eggs on rock formations,[8] and newly-hatched serpents are called Harlot-Fry. Notably, even hatchling serpents possess extremely sharp teeth.[9]
↑Forewarned, Sunless Sea"[...] serpentus sirenesis, [...] With your humaniform tale-tip and your alluring sigh-bladders."
↑Send a troublemaker to the rescue, Sunless Sea"The 'woman' [...] she's the tip of a zee-serpent's tail! The serpent's head rears from the waves. [...] thrashing and teeth and so forth, and your troublemaker is gone."
↑Forewarned, Sunless Sea"[...] serpentus sirenesis, [...] You've probably laid your eggs along the rocks here, haven't you?"
