It’s been 75 years since there were as many octopuses in British waters as there are now, with the UK’s Wildlife Trusts declaring that 2025 was the Year of the Octopus after divers and commercial fishermen recorded unprecedented numbers of these fascinating eight legged creatures. Matt Slater from the Cornwall Wildlife Trust described the year as exceptional, with divers witnessing octopuses jet propelling themselves along, camouflaging themselves to look just like seaweeds, cleaning themselves, and even walking using two legs to nonchalantly cruise away underwater. Scientists suggest milder winters may be leading to the boom, which is the term for octopus birthing seasons, though researchers are still working to figure out whether this is a one time event or something that will become a more permanent feature of British seas. Commercial fisheries had a banner year with catches reaching 12 times the typical amount, as previous high years in 2021 and 2023 saw around 200 metric tons landed while this year brought in an incredible 2,400 metric tons.
Interestingly, their chief prey species including lobsters, crayfish, and scallops have maintained year over year populations, with only crab numbers falling during the octopus explosion. If the suggestion that warmer winters may be behind the massive bloom proves correct, future hatching seasons could be similarly large, creating a new normal for British marine ecosystems. While it may be premature to celebrate an unusual effect that seems tied to climate change, it’s hard to argue with the smiles on the faces of divers who are witnessing incredible behaviors, diners who are enjoying fresh caught octopus, and fishermen who are experiencing their best season in decades. The octopus population surge offers a rare glimpse into how ocean ecosystems can shift dramatically in response to environmental changes, proving that nature still has the power to surprise us with its resilience and adaptability.
