93 tons of dead fish wash up on Sakhalin Island, Russia

93-tons-of-dead-fish-wash-up-on-sakhalin-island-russia

An estimated 93 tons of dead fish washed up on Sakhalin Island in Russia, north of Japan last week. 

"The death scale of the Pacific herring in Piltun Bay is enormous," a spokesman for the regional NGO Ecological Watch of Sakhalin said.

"The death of such an amount of uneven-aged fish of the same species is an abnormal event, and it may be a question of the destruction of a large part of the population of the herring of the bay."

The event was first reported on June 12:

Fish samples have been sent to Moscow for testing.

"Worlds largest oil companies produce tens of millions of tons of oil every year on Sakhalin," Russian Environmentalist Dmitry Lisitsyn said. "Compared to them, a few hundred tons of the deceased Pacific herring is a pittance."

A similar event occurred in the same place in 1999. Tinro Center concluded that "herring on the routes of spawning migrations fell into water layers containing oil or oil products, surfactants and drilling waste. This affected its migration behavior and combined with other adverse environmental factors, causing death of weakened herring."

Tens of thousands of Far Eastern Sardines, also known as iwashi, beached on the same island in October 2015. Beaches along the southern part of the Tatar Strait were literally carpeted with sardines. 

At the time, fish expert Nikolay Kim said the weather conditions had caused 'strong daily fluctuations' in water temperature. 'In the afternoon it is warm, but at night the temperature falls sharply,' he said. 'The sardines cannot withstand such fluctuations and can be found in a large number on the shore.'

News agency Interfax – Far East reported that water in the southern part of the Tatar Strait warmed to 20 °C (68 °F), but a recent cyclone led to a sharp decrease in its temperature. 

Featured image: Dead Pacific herring washed up on Sakhalin Island, Russia – June 2018. Credit: Dmitry Lisitsyn

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