2025 Declared the 'Year of the Octopus' Off Britain's Southern Shores.

Record-breaking encounters of a supremely intelligent sea creature over the summer months have prompted the naming of 2025 as the year for octopuses in an annual review of the nation's marine environment.

A Perfect Storm for a Population Boom

A gentle winter and then a remarkably hot spring prompted unprecedented numbers of *Octopus vulgaris* to take up residence along England’s south coast, spanning the Cornish and Devonian coasts.

“The reported landings was of the order of about over a dozen times what we would usually anticipate in Cornish waters,” stated a marine conservation officer. “Based on the totals, approximately 233,000 octopuses were caught in British seas this year – that’s a huge increase from the norm.”

*Octopus vulgaris* is found in UK waters but ordinarily in such small numbers it is rarely seen. An explosive growth is the result of a combination of a mild winter and a warm breeding season. Such favorable circumstances meant more larvae, possibly in part fuelled by significant populations of a favored prey species noted in recent years.

An Uncommon Occurrence

The last time, such an octopus proliferation of this size was recorded in the 1950s, with archival data indicating the previous major event was in 1900.

The remarkable abundance of octopuses meant they could be frequently seen in shallow waters for a rare occurrence. Video footage show octopuses being sociable – they are usually solitary – and moving along the ocean floor on their arm ends. A curious octopus was even filmed grabbing a diver's camera.

“On my initial dive in that area this year I saw multiple octopuses,” the officer added. “They are sizeable. We have two species in these waters. The curled octopus is quite small, about the size of a football, but these newcomers can be reaching impressive sizes.”

Future Prospects and Other Surprises

A second gentle winter this coming winter suggests the potential another surge next year, because based on records, under these conditions, events have occurred consecutively for two years running.

“But, it's improbable, looking at history, that it will go on for a long time,” they cautioned. “But the sea keeps giving us surprises at the moment so it’s hard to forecast.”

The report also highlighted additional positive marine news along the coast, including:

• Unprecedented numbers of gray seals seen in one northern region.
• Exceptional populations of the iconic seabirds on an island off Wales.
• A first-ever sighting of an unusual mollusc in Yorkshire, usually found in the south-west.
• A type of blenny spotted off the coast of a southern county for the inaugural time.

Environmental Concerns

The year had its low points, however. “The year was bookended by environmental disasters,” stated an expert. “A significant shipping incident in the North Sea and the release of plastic pollution off the Sussex coast served as stark reminders. Dedicated individuals are working tirelessly to defend and heal our shorelines.”