While conducting a tour of the "landlubbers' world" for a bus load of sea creatures, Pirate intercepts school-bound siblings Billy and Heidi and enlists their aid in recovering his hijacked ship from a troupe of mischievous monkey-crabs.
As they get older, several sisters decide that they must kidnap children and bring them to their secluded island home to help with the work of caring for an assortment of unusual sea creatures.
Provides an introduction to some of the different animals that live in the world's oceans, including the jellyfish, whale, manta ray, shark, starfish, sea cucumber, and others.
Introduces the basic concepts of the science of underwater life to young readers through clearly written text, colorful photographs and investigative activities.