A pod of orcas swims through the Saratoga Passage near Camano Island earlier this month. The killer whales target chinook salmon for their diet, and they use echolocation — sound — to find their food.
A pod of orcas swims through the Saratoga Passage near Camano Island earlier this month. The killer whales target chinook salmon for their diet, and they use echolocation — sound — to find their food. Orca Network Courtesy
A pod of orcas swims through the Saratoga Passage near Camano Island earlier this month. The killer whales target chinook salmon for their diet, and they use echolocation — sound — to find their food. Orca Network Courtesy

Increasingly noisy seas and lack of salmon and could spell doom for iconic marine mammals

October 28, 2017 08:00 AM