The following are ways for you to consider taking action on, in order to protect Sharks from overfishing and killing for their fins.
 

eliminate the sale of shark fins and pledge to never knowingly purchase or consume shark fins

Join WildAid  -  their "campaigns, in combination with government bans at official events, have contributed to a reported 50%-70% decrease in China’s shark fin consumption."  Sign their Shark Pledge and Global Petition below.

http://www.wildaid.org/sayno