An animal rescue group said 61 dead cetaceans - an order of aquatic mammals that includes whales and dolphins - had been recorded since the oil spill.

More than 30 dead dolphins have been found in the sea following an oil spill caused by the wreck of two tankers during a storm last month in the Kerch Strait, according to the dolphin rescue center Delpha,

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,

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Thirty-two dolphins have died following a fuel oil spill from storm-struck tankers in the Kerch Strait, separating Crimea from Russia's Krasnodar region. Animal rescue groups attribute the deaths to the spill,

More than 30 dolphins died in the Kerch Strait. The reason is a fuel oil spill that resulted from the sinking of Russian tankers, Delfacenter reports. Yesterday, a state of emergency was introduced in occupied Sevastopol.

Following the fuel oil spill on December 15, caused by a collision between two tankers in the Kerch Strait, 32 dolphins have died. Activists from the Delfa Dolphin Rescue Center shared this information.