There are so many mysteries still in the ocean! That makes a trip to an ocean and maritime museum especially interesting, and that's what keeps the Museum Kids there too late! As they try to leave, a magical elevator introduces the kids to a guide who takes them deep in the ocean and into the past. From the megalodon to Viking longships and the first submarine, the discoveries and events the Museum Kids encounter engage readers with the ocean in a whole new way! This interdisciplinary title supports both the science and social studies curriculum for elementary readers.