What a swordfish washing up on British Columbia's coast says about our changing oceans

A nearly two-metre-long swordfish carcass found on Haida Gwaii in northern British Columbia has highlighted how ocean warming is shifting where warm-water species can turn up. Swordfish are typically found far south of the region, and the species has been documented in B.C. only twice before, making this a rare sighting. The article links such unusual visitors to long-term North Pacific warming, potentially amplified by developing El Niño conditions. It also points to broader risks: a global study of 1,246 species across 254 regions found extreme heat plus low primary production can raise the odds of extremely low fish catches, with effects that can last for years.