Dolphins at daybreak

This story is about the magic tree house to them to the beach and slove a riddle when they found a mini sub then they took a ride in it.When they were in thge mini sub they took a quick ride in the sub and found two dolphfins and many fishes.Sunddelly a octopus when to grab the mini sub then the octopus shoot black ink because there was one hammer head shark.Then the mini sub has some cracks and water keep going into the mini sub so they have to swimming.When they were swimming they saw the hammerhead shark and they swam faster so they can escape from the hammerhaed shark.sunddenlley the dophfins came and save them to shore then Annie step on something then Annie found a oystar then Jack

and Annie saidtogether the answert to the riddle they said oysatr.