Growing numbers of dead dolphins are washing up on shore following the collision of two Russian oil tankers in the Kerch Strait between the Black and Azov Seas, according to ecologists. The deaths of 32 of the animals are believed to be linked to last month's spillage of heavy oil in the sea,

Large numbers of dead dolphins have washed up on the shores and banks of the Black Sea since two Russian oil tankers collided in the Kerch Strait last month.

Thirty-two dolphins have died since fuel oil spilled out of two storm-stricken tankers three weeks ago in the Kerch Strait, which separates the Russia-occupied Crimean Peninsula from Russia’s southern Krasnodar region,