Only two places in the world allow tourists to enter the water with the ocean’s apex predator. But the safety of both species is a growing concern.

According to the aquarium, Old Thom is the only orca regularly seen in North Atlantic waters. Unlike most killer whales that swim in pods, Old Thom is known to swim alone or with dolphins in the Gulf ...

Orca Channel photographer Krisztina Balotay captured the dramatic photos on a tour with Green Gold of Norway Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013, ...