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We're at COP28 to Save the Whale, Save the World.

We’re at COP28 to save the whale, save the world

Ed Goodall Ed is WDC's head of intergovernmental engagement. He meets with world leaders to...
Gray whales from drone.

We’re taking steps to uncover the mysteries of whales

Vicki James Vicki is WDC's protected areas coordinator, she helps to create safe ocean spaces...
We must protect our non-human allies. Image: Tom Brakefield, aurore murguet, johan63

We’re urging governments to protect all of our climate heroes – CITES

Katie Hunter Katie supports WDC's engagement in intergovernmental conversations and is working to end captivity...
The Natütama Foundation are dedicated to protecting endangered river dolphins. Image: Natutama

Guardians of the Amazon: protecting the endangered river dolphins

Ali Wood Ali is WDC's education projects coordinator. She is the editor of Splash! and KIDZONE,...
Amazon river dolphins. Image: Fernando Trujillo/Fundacion Omacha

Amazon tragedy as endangered river dolphins die in hot water

Ali Wood Ali is WDC's education projects coordinator. She is the editor of Splash! and KIDZONE,...
Indo-Pacific bottlenose dolphin © Mike Bossley/WDC

WDC in Japan – Part 3: Restoring freedom to dolphins in South Korea

Katrin Matthes Katrin is WDC's communications and campaigns officer for policy & communication in Germany...
Wintery scene in Iceland

Seeking sanctuary – Iceland’s complex relationship with whales

Hayley Flanagan Hayley is WDC's engagement officer, specialising in creating brilliant content for our website...
Whaling ship Hvalur 8 arrives at the whaling station with two fin whales

A summer of hope and heartbreak for whales in Icelandic waters

Luke McMillan Luke is WDC's Head of hunting and captivity. Now that the 2023 whaling season...

Size does matter for entangled whales but study finds that bigger is not necessarily stronger

Humpback whale with entanglement

Entanglements in fishing gear may be one of the single largest threats faced by whales and dolphins globally.  Referred to as “bycatch” because these interactions are incidental, not intentional, these interactions number in the hundreds of thousands each year. While some whales and dolphins escape with only scars as evidence, including all nine of WDC’s Whale Adoption Project humpbacks, an unknown number drown, starve to death, or die from a resulting systemic infection as the gear literally saws into their flesh. The risk of any single piece of fishing gear entangling a whale or dolphin is low but the risk of a whale or dolphin becoming entangled is high. For critically endangered species like the North Atlantic right whale or the vaquita, accidentally blundering into fishing gear brings can bring them one step closer to extinction.  

As part of several United States federally appointed Take Reduction Teams, WDC is working to create measures that reduce the risk of entanglements.  However, to create management plans that are effective, it is important to better understand the risk.  A recent study by researchers at the University of North Carolina, Wilmington and the Smithsonian Institute have looked at whale bones from museums and stranded species to measure just how much force a whale’s tail needs to pull the individual out of entangling gear.  The surprising results show that strength is not necessarily proportional to size.  Understanding that larger whales are not necessarily stronger than their smaller counterparts is enormously important when considering the breaking strength of lines used in various types of fishing industries. 

Although these data are invaluable, it is important to remember that entanglements involve living whales and dolphins so behavior is also a significant factor to consider.  It appears that, at least in some cases, whales will actually roll into the gear, rather than pull away from it.  Taking this “path of least resistance” may make sense to the whale at the time by reducing the pressure they feel from the gear, but it ultimately exacerbates the entanglement.  In that case, even a relatively weak piece of line can be fatal. 

There is no simple answer to this complex problem but data like those presented in this study provide valuable insight. 

If you’d like to help our work to reduce the threat of bycatch to whales and dolphins, please consider adopting one of our “survivors”.  As always, thank you for helping us work toward a world where every whale and dolphin is safe and free.