A companion exhibit to Endangered Species: Watermen of the Chesapeake, this exhibition gives a brief overview of the Chesapeake Bay and the major threats to its health. The exhibit features an educational area for programs, as well as videos highlighting environmental threats to the bay and excerpts from the documentary film, The Last Boat Out, chronicling the plight of one waterman’s family and their struggle to keep their livelihood. Included in regular admission. Adults, $12; AAA members, military, students, $11; seniors, $10; children (6-12), $7. Wednesday to Saturday, 10 a.m. to 5 p.m.; Sunday, Noon to 5 p.m.