A lone bottlenose dolphin is suspected of causing a series of attacks on swimmers in Tsuruga, Japan, resulting in 18 reported incidents since July 21. The dolphin, possibly separated from its pod, has bitten several swimmers, some requiring stitches. Researchers believe the dolphin’s behavior is driven by loneliness and a desire for human interaction, rather than aggression. Local officials are monitoring the situation and advising caution for beachgoers.