01637cgm a2200337 4500 599035150 TxAuBib 20150119120000.0 141118s2015||||||||||||||||||||||v|eng|u 9781627892049 1627892044 841887023337 NAT63203 PBS Distribution (OCoLC)897439028 DYJ eng rda DYJ TEF BDX GK8 OCLCA GK8 OCLCA KSA TxAuBib eng eng eng Invasion of the killer whales [DVD] / Terra Mater Factual Studios ; a coproduction with NDR Naturfilm, Doclights and Thirteen Productions ; written and directed by Ben Wallis ; produced by Brian Leith. Widescreen. [United States : PBS Distribution, 2015. 1 videodisc (60 min.) : sound, color ; 4 3/4 in. Originally broadcast by PBS Nov. 19, 2014. 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. Rating: TV-PG. DVD. 20150119. Subtitles in English for the deaf and hard-of-hearing. English dialogue. Killer whale Arctic regions. Television programs for the hearing impaired. Nature (Television program.)