The Golden Seashell Necklace

A story about a little girl, named Carol Anne, who meets a little girl, named Samantha Johnson, and they fast become friends, but Samantha has a secret: She's a mermaid, and so are her parents. They have come to live amongst us, thanks to these golden, seashell-necklaces. One day, Carol Anne tries one on and becomes a mermaid. Then, a Dr. Langdon finds out about her and wants to use her for experiments so he can win a Nobel Prize in Science, and Carol Anne must go live with Samantha and her parents as a mermaid, to get out of the evil clutches of Dr. Langdon.