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Image 1 - Shark's 'Denticles' Help It Achieve Higher Speeds
2012-02-09 13:47:34

Researchers have found that razor sharp tooth-like scales known as denticles found in a shark's skin actually help the fish swim faster. The denticles are thought of to behave like the dimples on a golf ball, disturbing the flow of water over the surface to help reduce the drag and increase the thrust. "What we found is that as the shark skin membrane moves, there is a separation of flow — the denticles create a low-pressure zone, called a leading-edge vortex, as the water moves...


Latest Dermal denticle Reference Libraries

39_0a70127831e80015c923d4cc49f1bc58
2007-03-19 15:01:39

The Basking shark, Cetorhinus maximus, is the second largest fish after the whale shark. The basking shark is a cosmopolitan species - it is found in all the world's temperate oceans. It is a slow moving and generally harmless filter feeder. Like other large sharks, basking sharks are at risk of extinction due to a combination of low resilience and overfishing through increasing demands for the sharks' fins, flesh and organs. Taxonomy This shark is called the basking shark because it...

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Word of the Day
lunula
  • A small crescent-shaped structure or marking, especially the white area at the base of a fingernail that resembles a half-moon.
This word is a diminutive of the Latin 'luna,' moon.
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