Tag: killer whale

April 11, 2022

Boat speed and sonar may thwart killer whales’ hunt for prey

When killer whales prowl the dark coastal waters of Washington state and British Columbia, sound helps more than sight. The marine mammals pulse a series of underwater clicks that beam...

April 7, 2022

How often should we survey marine mammals?

It’s always a good idea for managers keep a close watch on wildlife to understand the long-term population trends. But just how often do species need to be surveyed to...

October 7, 2021

Wild Cam: Orcas to blame for Aleutian sea otter collapse

Many people thought the sea otter populations around the Aleutian Archipelago were the model of the species’ success. For decades, populations up and down the Pacific Coast of North America...

March 30, 2017

Canada finalizes Action Plan for at-risk killer whales

On Mar. 9, Fisheries and Oceans Canada (DFO) released the final version of its Action Plan for the Northern and Southern Resident Killer Whale (Orcinus orca) in Canada. The Action...