easuring seabird and marine mammal productivity, populations, and diets, hydroacoustic and trawl surveys for prey and oceanographic studies around 9 different long-term study colonies in the Gulf of Alaska, Bering Sea and Chukchi Sea. No direct USGS funding. Conducted in collaboration with AMNWR, National Marine Fisheries Service (NMFS), and IMS-UAF. Project will continue in FY00 with surveys in SE Alaska (St. Lazaria Island).