Source: World Wide Web
Japan's "Hokkaido Shimbun" reported on the 30th that the outbreak of the most serious "red tide" crisis in the history of Hokkaido waters has been found in September, and more than 4,600 salmon, dozens of tons of sea urchins and other aquatic organisms have died, and the local fishery has been seriously affected.
A large number of sea urchin corpses washed up on the coast (Japanese media photo taken in Hokkaido on September 27)
According to the Hokkaido Shimbun, the "red tide" phenomenon is concentrated in the Pacific Ocean on the eastern side of Hokkaido, which has expanded to the largest scale ever, and the local fishery has been hit hard. According to reports, experts have detected at least 4 species of plankton that trigger "red tide" from the seawater, and there is no sign of the "red tide" subsiding, but there is a possibility of continued expansion.
Hokkaido sea water discoloration (Image source: Screenshot of Japanese media report)
According to reports, as of September 27, more than 4,600 salmon, more than 2,000 trout, and more than dozens of tons of sea urchins have been found dead on the east coast of Hokkaido. According to the Mainichi Shimbun, the relevant agencies in Kushiro-cho, Hokkaido, conducted a diving survey of the sea area, and based on the results of the investigation, it was speculated that about 90% of the sea urchins in the local waters had died. In response to this situation, the Hokkaido government said, "Never have you heard of such a large-scale victimization." ”
Dead salmon salvaged by Fishermen in Hokkaido
According to the Hokkaido Shimbun, "red tide" is a harmful ecological phenomenon caused by the explosive proliferation of plankton and other aquatic organisms, which can cause serious harm to aquatic organisms such as fish. In general, the water temperature in Hokkaido is low, plankton is difficult to multiply, and the phenomenon of "red tide" in Hokkaido is rare, and experts are further investigating the quality of seawater to explore the specific reasons for the occurrence of "red tide".