This isn't anything like Disney's "Little Mermaid." Released to television and video in 2001, "Sea Creature" centers on a pair of carnies (played by Rufus Sewell and Carla Gugino) during the early twentieth century who discover an actual mermaid in Ireland (Rya Kihlstedt). They capture her with the plan of bringing her to America as a sideshow attraction. What follows is horror. Reno Wilson and Gil Bellows also ap…