Nellie was fitted with a Sirtrack satellite transmitter to record her internesting movements. Some 9-10 days after nesting at Bame, Nellie nested in the Congo. She nested again north of Bame where her harness and transmitter were removed. Nellie provided crucial information, showing that leatherback turtles nesting at Mayumba may move several hundred kilometers north or south of each nesting site and may move 50-60 km from the shore.