A lot of dolphins die in fisheries. In the North Sea alone, an estimated 10,000 harbour porpoises are killed in fishing gear each year. In recent years there have been gear modifications that make it possible for the dolphins, to escape once a fishingnet is closed. Not every country has made these modifications mandatory yet, so dolphins are still killed in this fishery. The dolphins killed in fishery are mainly common dolphins, spotted dolphins and spinner dolphins. Occasionally other species, including bottlenose dolphins, are caught as well, but their numbers are lower.
Dolphins and Whales News -- ScienceDaily
Dolphins in the news
Crocodiles and dolphins evolved similar skulls to catch the same prey
- Despite their very different ancestors, dolphins and crocodiles evolved similarly shaped skulls to feed on similar prey, new research indicates.