CINTA ALLAH
Thursday, 15 September 2011
Shark and rays
Most fishes have a skeleton made of bone, but shark and rays have a skeleton made of storng, rubbery gristle, called cartilage. These fishes also have rough scales that feel like sandpaper. They are mostly hunters that live in salty water.
No comments:
Post a Comment
Newer Post
Older Post
Home
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment