IT WAS long believed that arctic terns flew about 22,000 miles (35,200 km) on their journey from the Arctic region to Antarctica and back.
SELAMA ini, orang mengira dara - laut arktik terbang pulang pergi sejauh kira - kira 35.200 kilometer dari Arktik (Kutub Utara) ke Antartika (Kutub Selatan).