Why a speeding shark is like a golf ball

2017-04-15 07:00:14

THE shortfin mako shark’s petrifying ability to slice through the ocean at up to 80 kilometres an hour relies on a trick of its scaly skin. The scales can reduce drag by bristling to create tiny wells across the skin’s surface – just like the dimples on a golf ball. Grooves on the 200-micrometre-long enamel scales of the fast-swimming shark are known to reduce drag slightly even when lying flat. Because the indentations on a golf ball reduce drag as it moves through the air,