Scientists are worried about two whales lost in 150km inland in Californian river. It is getting more and more difficult to make them swim to Pacific Ocean.

Berlin's landmark Brandenburg Gate was decorated with"¦ corpses of 17 small whales and dolphins on Monday in a dramatic action by Greenpeace activists to urge countries to resist increasing pressure for a resumption of commercial whaling.

The 40 ton whale and her 20 ton calf stuck in Port of Sacramento started swimming back to Pacific on Sunday very unexpectedly.

Two whales are not responding to the scientists' recorded whale calls to swim back to the ocean. They swam about 148 kilometres up rivers to California's Central Valley.

A new study analyzing whale meat sold in Korean markets suggests the number of whales being sold for human consumption in the Asian country is much higher than that being reported to the International Whaling Commission - putting threatened populations of coastal minke whales further at risk.