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The level of genetic differences found between transients and all other types of killer whales suggest their ancestors diverged roughly 700,000 years ago.
Prehistoric dolphins acted more like modern-day killer whales, according to a newly published study. The research, which appears in the scientific journal Current Biology, describes a 25-million ...
The ancient whale, which was about 28 million years old, grew to about 10 feet (3 meters) long and looked somewhat similar to modern-day dolphins or small cetaceans, though they are not closely ...
Killer whale populations in low latitudes have high genetic ... that about 20% of the genetic makeup of southwestern Australian killer whales can be traced back to Antarctic ancestors, ...
Dubbed "allokelping," it might be a unique cultural phenomenon that's as endangered as the orca population itself ...
While well-documented in the Northern Hemisphere and Antarctica, much less is known about killer whales (Orcinus orca) in ...