2025 Proclaimed the 'Year of the Octopus' Off Britain's South Coast.

Exceptionally high sightings of a remarkably clever cephalopod over the summer months have resulted in the declaration of 2025 as the octopus's year in an annual review of the nation's marine environment.

A Perfect Storm Driving a Surge

A mild winter coupled with a remarkably hot spring catalyzed a massive influx of common octopuses (*Octopus vulgaris*) to settle along England’s south coast, spanning the Cornish and Devonian coasts.

“The scale of the catch was roughly 13 times what we would typically see in this region,” explained an ocean conservation expert. “When we added up the numbers, around 233 thousand octopuses were found in British seas this year – representing a massive jump from historical averages.”

The Mediterranean octopus is found in these waters but ordinarily in such small numbers it is infrequently encountered. A sudden increase is attributed to the dual effect of gentle winter conditions and a warm breeding season. Such favorable circumstances meant increased juvenile survival, maybe aided by abundant stocks of spider crabs seen in the area.

A Rare Phenomenon

Previously, such an octopus proliferation comparable was documented in the mid-20th century, with historical records indicating the last bloom prior to that was in the turn of the 20th century.

The sheer quantity of octopuses meant they could be readily observed in coastal areas for the first time in recent history. Underwater recordings show octopuses being sociable – unlike their typical solitary behavior – and moving along the bottom on their tentacle tips. A curious octopus was even filmed grabbing submarine recording equipment.

“During a first dive off the Lizard peninsula this year I saw five of these creatures,” the officer added. “They are large specimens. Two kinds exist in UK waters. The curled octopus is quite small, about the size of a football, but the *Octopus vulgaris* can be up to a metre and a half wide.”

Future Prospects and Other Surprises

A second gentle winter heading into next year suggests the potential a second bloom next year, because historically, under these conditions, populations have surged again for two years running.

“But, it's improbable, from previous blooms, that it will become a permanent fixture,” they stated. “The ocean is full of surprises currently so it’s hard to forecast.”

The annual review also noted further encouraging coastal sightings across British shores, including:

• Unprecedented numbers of grey seals observed in Cumbria.
• Peak numbers of the iconic seabirds on a Welsh island.
• The first recording of an unusual mollusc in Yorkshire, usually found in the south-west.
• A variable blenny found off the coast of Sussex for the first time.

Not All Positive News

The year had its low points, however. “The calendar year was marked by marine incidents,” stated an expert. “A major tanker collision in the North Sea and a spill of tonnes of plastic biobeads off the southern coast were serious issues. Staff and volunteers are putting in immense work to protect and restore our shorelines.”