Mongabay · Climate & nature

World Dolphin Day Highlights Threats and Conservation Efforts

World Dolphin Day, observed on September 12, aims to raise awareness about the critical threats facing dolphin populations globally. Several species and subspecies are endangered, with human activities like illegal fishing practices and habitat degradation being primary concerns.

According to the IUCN, nine dolphin species and several subspecies are critically endangered or endangered. Lahille’s bottlenose dolphin, for example, has been reclassified as endangered with fewer than 400 individuals remaining, primarily due to bycatch in gillnet fisheries along the coasts of Brazil, Uruguay, and Argentina.

Despite these threats, conservation efforts are underway. These include research into novel dolphin behaviors, increased formal protections, and initiatives to end cruel confinement practices.

Illegal drift nets continue to trap dolphins in the Mediterranean Sea, despite being banned. Investigations revealed their widespread use in the Alboran Sea, impacting marine ecosystems. The EU is expected to propose stronger international rules in November 2026.

In Singapore, a resort has reportedly suspended captive breeding and sourcing of wild dolphins for its oceanarium. The facility houses Indo-Pacific bottlenose dolphins, many descended from animals captured in the Solomon Islands. The owning company is consulting experts on the future of its captive dolphins.

Researchers have documented bottlenose dolphins off Australia's east coast using empty sea snail shells to trap fish. This foraging technique was previously only observed in western Australia, suggesting independent development of the behavior.

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