An influx of swimmers being attacked by dolphins has resulted in the government issuing a warning to Japanese beachgoers. Officials believe that one particular dolphin is responsible for the attacks.
At least 10 dolphin attacks have been reported in the region of Fukui recently, forcing authorities to put signs up near the beach warning swimmers not to attempt to approach them.
Fukui tourism official, Masaki Tasui, said that authorities believe that the series of attacks have been carried out by one single dolphin - which was first seen at Koshino beach in April.
The most recent attack took place on 24 July, a man in his 40s suffered injuries to his hand after being bitten, the Asahi Shimbun reported.
Local media have reported that 10 similar incidents have been recorded at the same beach since it officially opened for the summer on 9 July.
Authorities installed warning signs on the beach, which read "never touch dolphins". They are also planning on installing specialist equipment that emits ultrasonic waves in an attempt to keep the dolphins away from the shoreline.
Mr Masaki said: "We understand that there are certain body parts where dolphins don't like to be touched, like the tip of its nose and its back fin."
Local media have reported that dolphins have also been spotted swimming in shallow water at the city's Takasu beach, approximately 10 kilometres northeast of Koshino beach.