On a small island near Gustavus, a wolf pack has decimated the local deer population – and started feeding on sea otters instead. The shift underscored coastal wolves’ adaptability. But then one died.

They move like ghosts along the shorelines of Canada's Vancouver Island, so elusive that people rarely see them lurking in the mossy forests. British filmmaker Bertie Gregory was one of the lucky ones ...

British Columbia sea wolves have been observed by researchers using their teeth to haul crab traps ashore where they would eat the bait intended for invasive green crabs. The discovery caught on ...