A red hammerhead shark was sighted in the designated swimming area of Tanoura Beach in Oita City on May 18 [1, 2].
The sighting has prompted local authorities to restrict beach activities to prevent potential injuries. This is the first time a shark has been spotted in this specific swimming area [1].
Oita City officials responded by erecting warning signs and prohibiting all marine-sports activities starting May 18 [1, 2]. The restrictions aim to protect visitors from the animal as the city prepares for the upcoming beach season.
Zentaro Torigoe, a staff member at the Umi Tamago aquarium, estimated the shark's length to be approximately 80 cm [1]. Based on the size of the individual, Torigoe said the shark may have been born this year [1].
Authorities have issued a warning to the public against attempting to interact with the animal. The risk of injury is a primary concern for the city, particularly for children who may be tempted to approach the shark.
"Even a juvenile has sharp teeth, so if you are bitten, you will definitely suffer a serious injury that requires a hospital visit," Torigoe said [1]. He further urged the public to follow safety guidelines, saying, "Absolutely do not approach or try to catch it. This is the one thing I want people to follow" [1].
Local officials continue to monitor the waters to ensure the safety of the public. The ban on marine sports remains in effect while the city assesses the situation and the potential for further sightings in the swimming zone [1, 2].
“Absolutely do not approach or try to catch it.”
The appearance of a red hammerhead shark in a designated swimming zone represents a rare safety disruption for Oita City's coastal management. While the shark's small size suggests it is a juvenile, the immediate ban on marine sports indicates a zero-tolerance approach to public risk before the official start of the swimming season.
