A green sea turtle migrated more than 2,000 km from Guam to a remote island in the Okinawa chain, a sea turtle conservation group said Thursday.

Satellite-tracking data by the government of Guam show that the female green sea turtle reached waters around Kume Island, some 100 km west of Naha, in January, the Sea Turtle Association of Japan said.

It is first confirmation that a green sea turtle has migrated from Guam to Japan, the group said. The turtle was apparently searching for seaweed to feed on.