Fig. 5. Daily locations of seven leatherbacks during a single internesting interval around the island of St Croix, US Virgin Islands (in black). Locations were established using directional VHF radio telemetry, in which turtle location was determined relative to the location of a shore-based VHF radio receiver and recorded as a compass bearing. Since each bearing has an inherent error, the probable location was expressed as a triangular shaped polygon. Where triangulation occurred, because a turtle was located from a number of shore-based locations, only the area where the polygons overlapped is shown. The primary nesting area on St Croix is Sandy Point National Wildlife Refuge on the southwest tip of the island. Dates are expressed as month/day.

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