Meet author Barbara Brennessel, learn about the Alewives and tour the Brewster Herring Run.

While on vacation in 1980, biologist Barbara Brennessel and her family came across an amazing sight: hundreds of small silver fish migrating from the Atlantic Ocean, across a channel connecting two ponds in the town of Wellfleet on Cape Cod.

Brennessel provides an overview of the biology of the fish--from fertilized eggs to large schools of adults that migrate in the Atlantic Ocean--while describing the habitats at different stages of their life history.

She explores the causes of the dramatic decline of river herring since the mid-twentieth century and the various efforts to restore these iconic fish to the historic populations that treated many onlookers to spectacular inland migrations each spring.