2025 Declared The Year for Octopuses Off Britain's South Coast.

Record-breaking encounters of a supremely intelligent sea creature over the summer months have prompted the declaration of 2025 as the year for octopuses in an annual review of Britain’s seas.

A Perfect Storm Leading to an Explosion

An unusually warm winter and then an exceptionally warm spring prompted a massive influx of common octopuses (*Octopus vulgaris*) to take up residence along the southern coastline of England, from Penzance in Cornwall to south Devon.

“The scale of the catch was of the order of about over a dozen times what we would usually anticipate in this region,” stated a marine life specialist. “When we added up the numbers, approximately 233,000 octopuses were caught in these waters this year – representing a massive jump from the norm.”

*Octopus vulgaris* is native to British seas but usually so scarce it is infrequently encountered. A sudden increase is attributed to the dual effect of a mild winter and a warm breeding season. These ideal conditions meant a higher survival rate for young, possibly in part fuelled by large numbers of a favored prey species seen in the area.

A Historic Event

The most recent occasion, such an octopus proliferation of this size was recorded in 1950, with past documentation indicating the one before that was in the turn of the 20th century.

The huge numbers of octopuses meant they could be frequently seen in nearshore environments for the first time in recent history. Underwater recordings show octopuses being sociable – contrary to their normally lone nature – and moving along the seabed on the tips of their limbs. A curious octopus was even filmed grabbing an underwater camera.

“On my initial dive off the Lizard peninsula this year I saw multiple octopuses,” they noted. “They are sizeable. We have two species in the region. The curled octopus is quite small, about the size of a football, but the *Octopus vulgaris* can be reaching impressive sizes.”

Future Prospects and Other Surprises

A second gentle winter heading into next year meant it was possible a repeat event next year, because in the past, under these conditions, the blooms have repeated for two years in a row.

“But, it's improbable, based on past events, that it will persist indefinitely,” they cautioned. “The ocean is full of surprises at the moment so it’s a very uncertain scenario.”

The assessment also noted other “surprises, successes and joyful moments” across British shores, including:

• A record number of gray seals recorded in one northern region.
• Exceptional populations of puffins on an island off Wales.
• The initial discovery of the *Capellinia fustifera* nudibranch in Yorkshire, usually found in the south-west.
• A variable blenny discovered off the coast of Sussex for the first occasion.

Not All Positive News

Challenges were also present, however. “The calendar year was marked by environmental disasters,” noted a conservation leader. “A major tanker collision in the North Sea and the release of industrial pellets off the southern coast highlighted ongoing threats. Conservation teams are putting in immense work to protect and restore our coasts.”