Northwest Straits Marine Conservation Initiative Reauthorization and Expansion Act of 2008

Northwest Straits Marine Conservation Initiative Reauthorization and Expansion Act of 2008 - Amends the Northwest Straits Marine Conservation Initiative Act to: (1) set forth the membership of the Northwest Straits Advisory Commission; (2) state the goal of the Commission as the protection and restoration of the marine waters, habitats, and species of the Northwest Straits region in the state of Washington to achieve ecosystem health and sustainable resource use; and (3) enumerate the duties of the Commission and establish benchmarks for its work. Provides for the appointment of a Director of the Commission and the establishment of marine resources committees in specified counties of the state of Washington.

Authorizes the Director of the Commission and the Director of the Padilla Bay National Estuarine Research Reserve to establish the Northwest Straits Marine Conservation Foundation as a nonprofit foundation to support the Commission and the marine resources committees established by this Act.

Authorizes appropriations for the Commission.