Coral the Reef Fairy (The Earth Fairies #4)

Coral the Reef Fairy (The Earth Fairies #4) by Daisy Meadows

The original UK version of the series was the "green fairies", but the US is always a bit different. The girls are at a beach earth festival. They run into Coral who wants to get her wand back from the Goblins. The shrink to a small size and swimming in the ocean. They ask a Clown Fish if he has seen the goblins. The catch is that the clown fish really is a clown and can't stop telling jokes. Once they do get an answer from him, they are able to find the goblins. The goblins are playing around the reef, damaging it in the process. Tourists are also causing damage. (However, they are not so intentional and the fairies can do work to stop them.) The girls and fairy finally get the goblin to let go of the wand by pulling him to the jellyfish. Now all is well in fairyland. The does provide some information on how to care for coral, but other than that it is a fairly typical one for the series.