Last year, there were 36 whales entangled with commercial fishing gear off the coasts of Oregon, Washington and California, or found entangled with West Coast fishing gear off the coasts of other countries. That’s the highest number of whale entanglements in the West Coast region since 2018, according to the National Oceanic and Atmospheric Administration. 

More than eight years ago, scientists at Oregon State University began collaborating with the Oregon Department of Fish and Wildlife, the commercial Dungeness crab fishery and environmental nonprofits to reduce entanglements of endangered humpback, fin and blue whales off the Oregon Coast. OSU scientists boarded research vessels and U.S. Coast Guard helicopters for surveys at sea and air to map the distribution of whales and their overlap with Dungeness crab fishing locations.   

The scientists found that the risk of entanglement in fishing gear is greatest for whales in April when they gather near shore to feed off the Oregon Coast, and the crab fishing season is still underway. That observation and discussions with stakeholders led to best practices and regulations adopted by ODFW to limit the risk of entanglement by, for example, reducing crab pot limits at the end of the season.  

Today, OSU scientists are expanding this work to include the risk of entanglement from other commercial fisheries, including rockfish and sablefish. They’ve also been analyzing scars on humpback whales’ tails and fins to better estimate how many whales are getting wrapped up in nets, lines, pots and buoys. Leigh Torres is an associate professor in the department of fisheries, wildlife and conservation sciences and Oregon Sea Grant Extension at Oregon State University. She joins us to share the latest with this award-winning effort to reduce whale entanglements off the Oregon Coast and beyond.