1. Center for Coastal Studies; 5 Holway Avenue, Provincetown Massachusetts 02657 U.S.A.
2. Anderson Cabot Center for Ocean Life; New England Aquarium, 1 Central Wharf; Boston Massachusetts 02110 U.S.A.
3. Atlantic Highly Migratory Species Management Division, National Marine Fisheries Service; National Oceanic and Atmospheric Administration; 55 Great Republic Drive, Gloucester Massachusetts 01930 U.S.A.
4. University of Rhode Island; Graduate School of Oceanography; 215 South Ferry Road, Narragansett Rhode Island 02882 U.S.A.
5. Northeast Fisheries Science Center, National Marine Fisheries Service; National Oceanic and Atmospheric Administration; 166 Water Street, Woods Hole Massachusetts 02543 U.S.A.