Since some people are trying to play the blame game I will put in my 2 cents...
Every race has been the cause of some species to go extinct, but there are only a few nations that try to reverse the effects with captive breeding. So instead of blaming who ever for them going extinct, point your finger and blame them for not trying to captive breed...
personally I am getting tired of the *_____* they have been caught numerous time fishing in Canadian waters and most recently, they have dropped their flags along with Russia's flags in the north pole... and I dare them to take it a little farther....
Also I really think they should ban fishing completely and start eating captive bred fish. I know that wouldnt happen right away but it is really the only way for the oceans to recover...
*Fill in the blank.