Joe wrote:
Shark skin saves naval industry money

Covering ship hulls with artificial shark skin could help ships sailing
smoothly. The growth of marine organisms such as barnacles on ship
hulls is a major cause of increased energy costs in the naval industry.
Shark skin offers a structural design that prevents this so called
'bio-fouling'.
....

You really should attribute things like this; otherwise its just
plagiarism.

http://www.scienceagogo.com/news/200...runc_sys.shtml