A look into a unique ecosystem, one that is endangered in many places A seed is jostled from a branch of a mangrove tree and floats to a lagoon in the Caribbean Sea. It takes root, sprouts leaves, and slowly begins to grow. Over many years, the mangrove will provide a home and nourishment for numerous creatures of land and sea. Among its roots come to live fiddler crabs and shrimp; in its branches dwell lizards and hummingbirds. Soon the tree is dropping...