C.M. Koseman

Main trigger words is cmkoseman, followed by alien_creature and snaiad

If you want something snaiad-like, it also has a rough idea of how a fututor, haplobrachid or cariocetes is supposed to look like. Chest_tentacle, or in the case of aquatic species, chest_siphon, groin_siphon or siphon-tailtip work as well.