Three people were bitten during a swim-with-the-dolphins session at a park in Mexico.
The incident happened at Dolphin Park in Isla Mujeres, near Cancun. The trainer told the tourists to splash the water and the dolphins would splash back at them.
But things didn't go quite as planned when one of the dolphins apparently decided he didn't want to play.
According to a report in Sweden's Aftonbladet, Swedish couple Sabina Cadbrand (26) and Christofer Stenström (30) were among the tourists in the pool at the time of the incident. Sabine said that a young woman began screaming that she had been bitten, followed a few seconds later by a middle-aged woman who started screaming hysterically that she had also been bitten.
The dolphin - a male called Picasso - then bit Sabina on the thigh before swimming back to the second woman and biting her again. At that point there was panic in the pool and everyone started screaming. The dolphin then headed back towards Sabina who said she can't remember whether she kicked out at it or not, but it turned away.
She shouted out to the trainer, who was some distance away, to get his attention but according to the report he "just looked confused". Everyone rushed ashore, three of them - including Sabina - with bleeding leg wounds.
"It was like we were in a scene from Jaws, but with dolphins," said Christofer Stenström.
One of the women's injuries were significant enough for her to need a wheelchair to be taken to hospital.
The tourists received a refund, but the park could not explain what had caused the incident.
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