Provides information about pearls, where and how they are found, their uses throughout history, and the dangers posed to pearls by disease and pollution.. Includes a glossary and resources for further study.
Beaver's excitement at finding a mussel that doubtless contains a pearl is tempered by the realization that such a treasure could stir the greed of his friends, causing a chain of environmentally disasterous events.
While visiting their cousin's pineapple plantation in Hawaii, the Aldens hear a local legend about a black pearl with a curse on it and investigate mysterious incidents on and around the plantation.