The oil spill in the Black Sea that has hit Russian and Crimean coasts since mid-December is particularly hard to clean up because it involves a "heavy" fuel that is less likely to float.

The head of Moscow-annexed Crimea warned Wednesday there was a "high risk" the peninsula would suffer severe environmental damage from an oil spill in the Black Sea.

The ecological catastrophe began December 15, when two Russian oil tankers, the Volgoneft-212 and the Volgoneft-239, sank ...

Authorities in Crimea have declared a regional emergency after oil from storm-damaged tankers reached the shores of ...

Thirty-two dolphins have died since fuel oil spilled out of two storm-stricken tankers three weeks ago in the Kerch Strait, ...

Most of the more than 30 dolphins killed in a Russian oil spill in the Kerch Strait were from the endangered Azov species.

Satellite images from January 5 show large fuel oil stains ranging from 3.5 to 9.5 kilometers west of Sevastopol, with a ...

Russia-appointed officials in Moscow-occupied Crimea have announced a regional emergency after oil was detected on the coast ...

Russia declared a regional state of emergency on Saturday in Crimea, which it seized from Ukraine in 2014, as workers cleared ...