Residents in coastal areas in the central provinces of Thua Thien-Hue and Quang Binh have recently reported an unusual number of fish that were found dying or already dead and drifted ashore.
The residents living near Lang Co Beach in Thua Thien-Hue flocked to the beach to catch batoids, which were almost dead when they were drifted ashore, over the past week. Each of them caught around 10 kilograms of batoids each day.
Nguyen Van Chien, a resident, said that batoids drifting ashore was an extremely rare event because they lived deep under the sea. Seaside hotels have warned swimmers against batoids as they may be hurt by the fish.
Other kinds of fish were also found dead and washed into spots between rocks near the shore.
Local authorities invited the agency in charge of aquatic resources to investigate the phenomenon. Experts from the agency took samples of water for testing. They said the results will be announced soon.
The same thing occurred in some beaches in Quang Binh Province.