The orcas' coordinated movements and tail slaps suggested they were hunting. Drucker used the zoom lens on her camera to spot a harbor seal that was trying to flee from the pod. One of her shots showed the seal flying through the air above the scrum of orcas frothing the water, and she assumed she was witnessing the seal's last moments alive.

A wildlife photographer out on a whale watching trip in waters off Seattle captured dramatic video and photos of a pod of killer whales hunting a seal that survived only by clambering onto the stern o...