Mermaid Princess

It is the morning after a stormy night. You decide to take your boat out and circle around the small island where your lighthouse stands. While searching for storm damage and debris, you discover what appears to be a lifeless body floating in the water. As you pull the body into your boat, you realize it is a young woman who, to your astonishment, has a fish tail instead of legs. She seems to be alive but unconscious. What do you do next?