Trade interest trumped conservation at a U.N. wildlife conference on Thursday in Qatar, where proposals to step up protection for polar bears, bluefin tuna, coral and sharks all fell flat. How can people really get along with animals?

African elephant, Polar bears, variety marine species... They shared the earth with mankind, and they may became man's friends. But their life has also changed by man's behavior.

For polar bears, their home just melting under their feet for the reason of climate change.

And for other wildlifes, things getting worse.

They are waiting for Atlantic bluefin tuna...

The fish is prized as sushi but stocks have plunged more than 80 percent since 1970.

Japan imports about 80 percent of the catch, mostly from the European union.

But this is not the problem to blame whom, but a metter of cooperation.

Willem Wijnstekers, Cites Secretary General, said, "For tuna and other fish species there are other organizations that are co-responsible. The question is who has to do what. I think that everybody cares about wildlife. It's all about who is responsible for what ."

A bid to ban the international export of the bluefin tuna, was killed along with regulations on the pink and red coral trade during the 175-nation Convention on International Trade in Endangered Species.

The meeting was opened two weeks ago with calls from the United STates and Europeans to give a lifeline to overfished oceans.

Amid the disappointments for conservation advocates, there were some successes.