2025 Declared The Year for Octopuses Off England's South Coast.
Exceptionally high encounters of a remarkably clever cephalopod over the summer months have prompted the designation of 2025 as the year for octopuses in an annual review of the nation's marine environment.
Ideal Conditions for a Population Boom
A gentle winter followed by an exceptionally warm spring triggered a huge population of *Octopus vulgaris* to take up residence along the southern coastline of England, across the southwestern peninsula.
“The reported landings was of the order of about thirteen times what we would usually anticipate in this region,” explained an ocean conservation expert. “Calculating the figures, around 233 thousand octopuses were present in UK waters this year – that’s a huge increase from the norm.”
The common octopus is native to these waters but usually so scarce it is seldom observed. A population bloom is the result of a combination of a mild winter and favorable spring temperatures. These ideal conditions meant a higher survival rate for young, possibly in part fuelled by abundant stocks of spider crabs seen in the area.
A Historic Event
Previously, such an octopus proliferation of this size was observed in the 1950s, with past documentation indicating the one before that happened in 1900.
The remarkable abundance of octopuses meant they could be easily spotted in nearshore environments for the first time in living memory. Video footage show octopuses being sociable – they are usually solitary – and ambulating along the bottom on their arm ends. One individual was even seen investigating submarine recording equipment.
“During a first dive off the Lizard peninsula this year I saw multiple octopuses,” the officer added. “They are large specimens. There are two types in the region. The curled octopus is rather small, the size of a ball, but the *Octopus vulgaris* can be with a span of 1.5 meters.”
Looking Ahead & Coastal Highlights
Another mild winter this coming winter suggests the potential a second bloom in 2026, because based on records, in similar situations, populations have surged again for two years running.
“Still, the chances are low, looking at history, that it will go on for a long time,” they cautioned. “The ocean is full of surprises currently so it’s hard to forecast.”
The report also celebrated other “surprises, successes and joyful moments” around the UK coastline, including:
- A record number of grey seals seen in Cumbria.
- Record numbers of puffins on a Welsh island.
- The first recording of a rare sea slug in Yorkshire, usually found in the south-west.
- A variable blenny spotted off the coast of Sussex for the inaugural time.
Environmental Concerns
Not everything was good news, however. “The calendar year was marked by environmental disasters,” said a head of marine conservation. “A significant shipping incident in the North Sea and a spill of tonnes of plastic biobeads off the southern coast highlighted ongoing threats. Conservation teams are making huge efforts to defend and heal our shorelines.”
