Tiny sharks have long been blamed for the eerily perfect circles carved into the skin of whales, dolphins and even submarines ...

Scanning electron images show four types of denticle shapes found in bonnethead shark skin, arranged from least to most pointed (A–D). Samples come from juvenile and mature female sharks, revealing ...

Side view of a great white shark with highlighted skin sampling locations, showing detailed denticles captured by a microfocus X-ray CT scanner. New findings on how sharks achieve drag reduction could ...