Fisherman report bluefin tuna boom, but quotas mean hundreds of tons discarded

Calls are growing to raise tuna quotas for South Korea’s eastern provinces as rising sea temperatures have seen the warm-water species expand its habitat to the country’s entire East Sea coastline. The push comes after South Korea recently identified juvenile bluefin tuna for the first time in its northernmost waters, suggesting the species may be establishing a spawning ground in Korean waters.