At Hahei Beach in New Zealand, a drone video captured 3 killer whales trailing closely behind a swimmer.

Swimmer Judie Johnson was wearing a black wet suit at the time, and feared it could be mistaken for a seal and provoke an attack. She says she originally mistook the Killer Whales for dolphins until she noticed the color on their backs.

Fortunately, they swam alongside her for a couple minutes before swimming away from her. Yikes.

h/t Abc7 Chicago