How are sharks helpful to humans?


They are a good source of meat. Their skin can be tanned into leather or used as sand paper. They are good for medical research. Their maw is good as a supplement or medicine. Their liver is great for a supplement or the main component of cod liver oil. Their teeth can be used as tools or weapons.

http://wiki.answers.com/Q/Special:UnAnsweredQ&tid=2999 the Shark Wrangler, www.sharkwrangler.com