Ancient navigators used testicles as a compass
A meteorologist says ancient navigators dragged their testicles in the sea to find out where they were.
Penehuro Lefale argues seafarers wanted to test the temperature of the water to see how far away from land they were.
They apparently judged this by checking how much their scrotums tightened.
He told an international conference in Samoa: "If their testicles shrank they knew they were moving away from land."
The conference was organised by the Macmillan Brown Centre for Pacific Studies, The Independent on Sunday reports.