Overfishing and Climate Change Destroying 500-Year-Old Mauritanian Fishing Culture, 76% of Dolphins Now Following Trawlers

For hundreds of years, the Imraguen people of Mauritania have fished using wind-powered boats and traditional methods, living in harmony with the rich waters of the Banc d’Arguin [191763]. That way of life is now under threat from two directions: climate change is altering fish populations, and large industrial vessels are depleting the sea through overfishing [191763]. At the same time, younger generations are losing ancestral knowledge of the craft, endangering not just the Imraguen’s livelihoods but a unique cultural heritage that has survived for centuries [191763].

A similar crisis is unfolding in the Adriatic Sea, where bottlenose dolphins are changing their hunting habits [187763]. Instead of catching wild fish, many now follow trawlers to scavenge for food [187763]. In one area, 76% of fishing boats were followed by dolphins, and scientists say baby dolphins learn this technique from their parents [187763]. “These days the easiest way to find them is to look for trawlers,” said Giovanni Bearzi, a co-author of the study and president of Dolphin Biology and Conservation in Italy [187763]. “Many of them are followed by the dolphins that go to forage and scavenge in their wake” [187763]. The study suggests that overfishing has made it harder for dolphins to find food naturally, making the animals dependent on human activity for survival [187763].