Invasion of the Killer WhalesDVD - 2015
A remarkable new story is unfolding in the Arctic. As the ice melts and polar bears struggle to survive, another animal is taking over the polar bear's once dominant role as top predator. An ever-increasing number of killer whales are appearing in Arctic waters. As the polar bear's world is shrinking, the orca's is growing.
Publisher: [United States] : PBS Distribution, 2015.
Copyright Date: ℗♭2013
Characteristics: video file,DVD video digital,optical,stereo 4 3/4 in. 1 videodisc (60 min.) : sound, color ; 4 3/4 in.