Linda Chapman 
Not Quite a Mermaid: Mermaid Rescue 

Electra is very excited. Two of the older mermaids, Keri and Marina, have asked her if she would like to go camping with them on Craggy Island. What an adventure!But the adventure comes to an abrupt end when Electra’s mum tells her that she is too young and won’t let her go. How will Electra have any fun now?