Submerged

Prince Eric washes up on shore after a shark attack bite that nearly claims his life, but he does not expect the woman who saves his life to be the siren of the sea he's been hunting for months ever since she saved his life on his 21st birthday. When he wakes, he's dismayed to learn the exiled woman who looks like the siren is not a mermaid, and she harbors a dark secret, like him.