Northern Resident killer whales off British Columbia have been recorded going quiet during salmon hunts, apparently listening for the sounds of Pacific white-sided dolphins already chasing fish, then ...

More whales and dolphins often remain beyond the researchers’ line of sight—whether deep underwater or not visible in poor weather or rough seas. To improve animal detectability, the team used cutting ...

Two very interesting stories about the amazing cognitive and emotional lives of cetaceans recently came into my email inbox. The first follows up on some essays I've written about grief and mourning ...

Whales, dolphins, and porpoises are fascinating cetaceans that exhibit both similarities and distinct differences. Notably, dolphins fall into the category of toothed whales, while porpoises represent ...

Deep in the world's oceans, large male sperm whales emit slow, low-frequency clicks with the highest source levels of any animal communication sounds. These slow clicks are not the echolocation clicks ...

Since May 2025, seven hydrophones — highly sensitive underwater microphones — have been recording the sea day and night in seven locations in the Pearl Islands Archipelago, from Chiriquí to the ...