Mermaid Friends (Not Quite a Mermaid #3)

Electra and her school friends are off on an overnight trip to Craggy island. When they arrive, Electra sees some of the older mermaids looking at her and giggling and she is upset to discover they're laughing at the fact that she has legs instead of a tail! The girls are even meaner later on when they tell Electra and her friends that the island caves, they plan to have a midnight feast in, are haunted.