(1) Monitor the subsistence and handicraft harvest of polar bears, sea otters and walrus; (2) Obtain essential biological data needed to manage; and (3) Help prevent the illegal take, trade and transport of specified raw marine mammal parts. The Marine Mammal Protection Act of 1972 allows Alaska Natives to harvest marine mammals for subsistence uses. The Marine Mammal Protection Act (pdf) requires that all sea otter and polar bear hides and skulls, and all walrus tusks be tagged by a representative of the U.S. Fish and Wildlife Service. This program is implemented through resident MTRP taggers located in coastal villages and communities throughout Alaska. There are more than 150 taggers located in about 100 villages. The information collected by the MTRP will help ensure the long-term survival of these species by monitoring the Native harvest and controlling the illegal take, trade, and transport of marine mammal parts. To find out how to contact taggers, call John Trent at 1-907-786-3815 or 1-800-362-5148. Main gaps: The MTRP harvest data are for 3 stocks of northern sea otter and, with data provided by Russian authorities, for the one stock of Pacific walrus. Polar bear harvest for the Chukchi Sea and southern Beaufort Sea polar bear stocks are for US communities only. Additional harvest occurs in Canada but is accounted for by the Inuvialuit-Inupiat Agreement of 1988. In the largest Alaska walrus harvesting communities, MTRP data are supplemented and independently assessed by a Walrus Harvest Monitoring Program (WHMP) that has existed, more or less continuously since 1960. This program also collects biological specimens. The contact for WHMP is Jonathan_Snyder@atfws.gov. Mr. Snyder is also in the Office of Marine Mammals Management, Region 7, USFWS MS 341 1011 East Tudor Road, Anchorage AK, 99503. Network type: Subsistence harvest data on polar bears and northern sea otters are collected from hunters in Alaska coastal communities.