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.

Ukraine says it hit an oil depot inside Russia that served a strategic air base in the southern Saratov region in what appears to have been a strike with Ukrainian weapons.

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.

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, ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

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 ...