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Subseries contains correspondence, research data, and conference minutes and notes related to the Census of Marine Life subcommittee Tagging of Pacific Predators (TOPP). The Tagging of Pacific Predators project electronically tagged and tracked 4300 different marine predators, including sharks, seals and seabirds, tracing routes taken by these species in their search for ocean prey. The project, headed by American scientists Barbara Black, Steven Bograd, Daniel Costa and Randy Kochevar, discovered that many animals travel entire oceans at a variety of depths, from the poles to the tropics, continent to continent, in the search for food. It was also discovered that many predatory marine creatures migrate along the same oceanic corridors, congregating along their feeding routes.