Killer Whales—Killing Other Whales

During April and May transient killer whales frequent Monterey Bay, and that's when Black, an independent marine biologist who also runs the Monterey Bay Whale Watch, sees the highest numbers of predatory attacks.

That's because gray whales are gliding through these waters during their migration from Mexico to the Bering Sea. The transients ambush them—they have a taste for the gray whale calves' high-energy blubber and protein-rich tongues. Black's goal is to catch a glimpse of the feeding frenzy.
Researchers have identified three types of killer whales, or orcas, along the U.S. Pacific coast: offshores, residents, and transients. Little is known about offshores, rarely seen deep-sea denizens. Residents are the most familiar—their gregarious socializing and aerial acrobatics thrill whale-watchers.
Transients are "a breed apart"—elusive killers that rove over 1,500 miles (2,400 kilometers) of coastline from California to Southeast Alaska.
"The transients are so different in behavior, diet, and even genetically from fish-eating residents that many scientists believe they could be a distinct species altogether," said Black.

I found it amazing that these whales were killing other whales even more than that, they believe that they may be a different species altogether. I love ocean life and the Orca's are probably one of my favourite ocean mammals. They are the kings of the sea with no natural predators except for HUMANS. I will continue to check to see if these transient whales are in fact a new species

Source: http://news.nationalgeographic.com/news/2003/03/0324_030324_tvkillerwhales.html