'Prolific' killer whale matriarch presumed dead after nearly a year without a sighting
An orca matriarch known as "one of the most prolific female killer whales" on record is presumed dead after nearly a year without a sighting on the West Coast, according to B.C. researchers.
An orca matriarch known as "one of the most prolific female killer whales" on record is presumed dead after nearly a year without a sighting on the West Coast, according to B.C. researchers.
