"A huge marine reserve in the Pacific Ocean has led to the recovery of tuna and other migratory fish around its borders, according to a study.

The Papahānaumokuākea Marine National Monument in Hawaii is almost four times the size of California.

Fishing is banned inside the zone, but a spillover effect has boosted tuna stocks in nearby waters, scientists have found."

Maddie Molloy reports for BBC News October 20, 2022. [2]