1.Overfishing: Empty Oceans, Empty Nets
http://www.habitatmedia.org/issues.html

2.The Agreement on High Seas Fishing
http://www.un.org/ecosocdev/geninfo/sustdev/fishery.htm

3.Overfishing of Target Species
http://www.wri.org/wri/indictrs/rrovrfsh.htm

4.Underwriting Overfishing
http://www.livingplanet.org/resources/publications/water/overfishing/index.html

Tiyona's references
5. Some important effects of overfishing.
http://www.greenpeace.org/~comms/fish/amaze.html

6. The top 20 countries that contribute to the overfishing problems.
http://www.greenpeace.org/~comms/fish/part2.htm

7. This site shows various fishes and their status of explotation.
http://seawifs.gsfc.nasa.gov/OCEAN_PLANET/HTML/peril_overfishing.html