Special Ed

I smoke a lot of weed.

Useless Knowledge:
Shark skin under a microscope. Shark skin doesn’t look like normal fish skin. It’s made of microscopic diamond shaped scales with rough edges, called “denticles”. These are thought to share an evolutionary origin with teeth - indeed, they have much more in common with teeth than with scales. Like teeth, they consist of a central cavity made of pulp surrounded by dentine and enamel.The flexible but irregular surface is impossible for barnacles and other micro-organisms to cling to, as well as decreasing drag and turbulence. So just when you thought sharks couldn’t get any scarier, it turns out that their entire bodies are literally COVERED with teeth.

Useless Knowledge:

Shark skin under a microscope. 

Shark skin doesn’t look like normal fish skin. It’s made of microscopic diamond shaped scales with rough edges, called “denticles”. These are thought to share an evolutionary origin with teeth - indeed, they have much more in common with teeth than with scales. Like teeth, they consist of a central cavity made of pulp surrounded by dentine and enamel.
The flexible but irregular surface is impossible for barnacles and other micro-organisms to cling to, as well as decreasing drag and turbulence. 

So just when you thought sharks couldn’t get any scarier, it turns out that their entire bodies are literally COVERED with teeth.

Hide notes

  1. shadowxxx132 reblogged this from speshuled
  2. scribbles-of-blue reblogged this from speshuled
  3. dred75 reblogged this from hisdarlin
  4. tsasiks reblogged this from hisdarlin
  5. nohope80 reblogged this from hisdarlin
  6. rushfan22112 reblogged this from hisdarlin and added:
    Cool!
  7. hisdarlin reblogged this from speshuled
  8. macressler reblogged this from brainslush
  9. luigiegh reblogged this from n-of-one
  10. cheshirecopycat reblogged this from n-of-one
  11. n-of-one reblogged this from speshuled and added:
    Useless Knowledge: Shark skin under a microscope. Shark skin doesn’t look like normal fish skin. It’s made of...
  12. fallopiusfriend reblogged this from speshuled
  13. brainslush reblogged this from speshuled
  14. speshuled posted this