A lone dolphin thought to be “sexually frustrated” is being blamed for a series of attacks on at least 18 swimmers in the waters off the town of Tsuruga, on the east coast of Japan, the BBC reports.
“Just as in humans and other social animals, hormonal fluctuations, sexual frustration or the desire to dominate might drive the dolphin to injuring the people it interacts with. Since they are such powerful animals, this can lead to serious injury in humans,” said marine biologist Simon Allen.