What is the reason for the appearance of fish carcasses off the coast of Japan?

The reason for the appearance of fish carcasses off the coast of Japan is still unknown. The Ministry of Maritime Safety was quoted as saying that no ship had an accident near the accident area. Three years ago, Aomori Prefecture also salvaged a large number of sardines. At that time, people speculated that the cause of death was a sharp drop in seawater temperature.

Seeing such a report, many people's first reaction is nuclear pollution. Earlier this year, the Japanese government and the Tokyo Electric Power Company decided to discharge the nuclear polluted water from the Fukushima Daiichi nuclear power plant into the sea through the submarine tunnel. Last year, a large number of groupers died in several waters near Myanmar. At that time, someone pointed the finger at Japan.

Follow-up investigation of fish carcasses along the coast of Japan

According to the news of NHK, Japan Maritime Self-Defense Force recently found the bodies of dense floating fish off the coast of Aomori Prefecture. These fish are 5- 15 cm long and may be sardines from the outside.

According to reports, the Maritime Self-Defense Force Hachiba Space Base first observed a large number of fish carcasses floating in the waters near Dongtong Village, Aomori Prefecture, and reported to the Maritime Security Headquarters of the Second District. Subsequently, eight maritime security departments drove patrol boats to the sea area and found a large number of small sardines floating densely on the sea surface, with an area of about 4 kilometers long and 50 to 100 meters wide.

Some experts tend to think that climate change has caused a large number of fish deaths. In August this year, a large number of fish carcasses appeared near Tatarstan, Russia. According to the Volga River Basin Ecological Research Institute, hot weather leads to algae overgrowth, which sinks to the bottom of the sea after death and needs to be decomposed by a large number of bacteria that consume nutrients, which eventually leads to insufficient oxygen content on the bottom of the sea and the death of other marine organisms due to lack of oxygen.