Tuesday, August 6, 2013

Duuun Dun: Shark Week Is Upon Us

It's the Discovery Channel's Shark Week and the shark-viewing frenzy is on.  To satisfy your appetite between episodes for all things shark, the TWU Libraries present the following.

Duuun dun.

TEN THINGS YOU MIGHT NOT KNOW ABOUT SHARKS  (courtesy of DK Publishing, New York, NY)

1)  There are more than 450 species of sharks that range in size from the dwarf lantern shark (8-1/2 inches) to the whale shark (which can grow to a length of 59 feet.)

2)  Sharks have a sixth sense.  They have tiny jelly-filled canals on their snouts that detect the weak electrical signals emitted by all living things (including you and me.)

3)  Sharks can lose between 8,000 and 20,000 teeth in a lifetime.

4)  Sharks produce their own antibiotic, which protects them against bacterial and fungal infections.

5)  Sharks cannot stop suddenly.  They also cannot swim backwards.

6)  Some deep-sea sharks do not mature until they are at least 40 years old.

7)  Female basking sharks may have pregnancies that last for three years.

8)  The skin of the chain cat shark glows in the dark, but no one has yet been able to discover why.

9)  Bull sharks, one of the most dangerous species to humans, are the only common sharks that migrate from salty oceans to rivers, traveling upstream to find food.

10)  Sharks living in cold water can heat their eyes using a special organ next to a muscle in their eye socket.  This lets them hunt in extreme temperatures.

~Suzanne Sweeney