This I learned today: Sharks have denticles!

A shark's 'denticles', are thought to behave like the dimples on a golf ball, thereby reducing the drag. Now here is the best part, they move.

I want some!

From Science Daily:

"...George Lauder from Harvard University explains that the fish have long inspired human engineers, but more recently attention has focused on how the fish's remarkable skin boosts swimming. Coated in razor sharp tooth-like scales, called denticles, the skin is thought to behave like the dimples on a golf ball, disturbing the flow of water over the surface to reduce the drag. But something didn't quite sit right with Lauder. ..."

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