Just before they plunge into the water from 100 feet [30 m] or so, their wings are drawn back to form an arrowhead and their nostrils are sealed.
Persis sebelum mencebur ke air dari ketinggian sekitar 30 meter, sayap mereka ditarik ke belakang sehingga mirip kepala anak panah dan lubang hidung mereka ditutup rapat.