Bycatch in gillnets is considered the greatest threat to many coastal dolphin species worldwide. Small dolphin populations in particular—such as the Franciscana dolphin (Pontoporia blainvillei) pictured above—are increasingly being pushed to the brink of extinction as a result. This makes it all the more important to find solutions that can be implemented quickly, cost-effectively, and in collaboration with local communities.
A recent study now presents a promising approach: Using simple, reused PET bottles attached to fishing nets as acoustic reflectors, dolphin bycatch was reduced by an impressive 88%. At the same time, the catch of target species remained unchanged—a crucial factor for acceptance by the fishing industry.
What makes this method unique:
It requires no electronics, no complicated technology, and no expensive equipment. This makes it particularly suitable for developing and emerging countries, where many coastal communities rely directly on traditional fishing for their livelihoods.
Equally important is that this solution was not developed in a laboratory, but rather created and tested in collaboration with local fishermen. Their experience, knowledge, and active participation were central to its success. It is precisely these kinds of collaborative approaches between science, conservation, and local communities that are crucial for the long-term protection of endangered marine mammals.
YAQU PACHA supports projects that develop scientifically sound, practical, and socially sustainable solutions to protect both people and nature.
YAQU PACHA thanks Nuremberg Zoo, Zoomarine Algarve, Duisburg Zoo, Heidelberg Zoo, and Düsseldorf Aquazoo for supporting this important work against dolphin bycatch.
