Three killer whales dragged a trainer to her death before horrified spectators at a theme park.

The 20-year-old woman, whose name wasn't released, had ridden on the back of one of the whales during a show Wednesday at Sealand of the Pacific. Then she fell into the water as she walked along the edge of the whale pool, said Nadine Kallen, one of about 10 spectators.As she was being helped out, one of the whales grabbed her foot and pulled her back into the water, Kallen said. For the next 10 minutes, the whales batted the screaming woman about and dragged her underwater as employees tried to get her out.

Another spectator said it appeared the whales were playing and weren't trying to hurt her.