Margaret Clark 
Dollar for a Dolphin [EPUB ebook] 

There’s a pod of dolphins in the bay and Meg and Mike’s teacher Ms Lee gets the kids involved in the "Adopt-a-Dolphin" scheme. Everyone brings a dollar so they can support the dolphins and go on a dolphin-watching trip. And nothing can spoil the most perfect day out, not even when the money disappears, and Greash and Foxie are the prime suspects, as usual.DOLLAR FOR DOLPHIN is the tenth instalment in a series loved by children all over Australia.