Octopus population surges 1,500% in British waters, sparking emergency fisheries summit

Octopus landings at UK ports have exploded from an average of about 220 tonnes per year to more than 3,700 tonnes, a rise of roughly 1,500% since 2021. The sudden abundance has created a lucrative, fast-growing fishery for some operators while devastating shellfish populations such as crabs, lobsters, whelks, clams and mussels that the predators consume. At the request of the fishing sector, Defra convened an emergency conference on October 15, bringing together fishermen, marine scientists and international experts to examine the ecological and commercial implications.

Mike Cohen of the National Federation of Fishermen's Organisation described the event as upending established knowledge and a dual threat and opportunity, while Defra’s chief scientific adviser Anjali Goswami called it a stark reminder of how quickly marine ecosystems can change. Participants also warned of safety concerns as more vessels converge on the same grounds, and they drew on experiences from Brittany, Spain and Australia to propose management frameworks. Findings from the gathering will be compiled by Defra and the Marine Management Organisation to shape future fisheries policy.