2025 Declared the 'Year of the Octopus' Along England's Southern Shores.

Record-breaking encounters of a supremely intelligent sea creature this past summer have resulted in the naming of 2025 as the year for octopuses in an annual review of UK coastal waters.

A Perfect Storm Driving a Surge

A gentle winter followed by a remarkably hot spring catalyzed a huge population of *Octopus vulgaris* to settle along the southern coastline of England, spanning the Cornish and Devonian coasts.

“The volume of octopuses caught was roughly thirteen times what we would typically see in this region,” stated a marine conservation officer. “Calculating the figures, approximately 233,000 octopuses were found in these waters this year – which is a significant rise from what is typical.”

*Octopus vulgaris* is found in these waters but ordinarily in such small numbers it is infrequently encountered. A population bloom is the result of the dual effect of a mild winter and favorable spring temperatures. Such favorable circumstances meant a higher survival rate for young, possibly in part fuelled by significant populations of other marine life noted in recent years.

A Rare Phenomenon

The last time, such an octopus proliferation of this size 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 huge numbers of octopuses meant they could be readily observed in shallow waters for a rare occurrence. Video footage show octopuses congregating together – unlike their typical solitary behavior – and moving along the seabed on their tentacle tips. A curious octopus was even seen investigating an underwater camera.

“The first time I dived in that area this year I saw five of these creatures,” the officer added. “They are large specimens. There are two types in UK waters. The curled octopus is smaller, football-sized, but these common octopuses can be with a span of 1.5 meters.”

Predictions and Marine Joy

A second gentle winter heading into next year could lead to a repeat event next year, because historically, in similar situations, populations have surged again for two consecutive years.

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

The annual review also celebrated additional positive marine news across British shores, including:

• Unprecedented numbers of gray seals observed in Cumbria.
• Record numbers of the iconic seabirds on Skomer.
• The initial discovery of a rare sea slug in Yorkshire, normally residing farther south.
• A Mediterranean fish species spotted off the coast of Sussex for the first time.

Not All Positive News

Challenges were also present, however. “The calendar year was marked by ecological challenges,” noted a conservation leader. “A major tanker collision in the North Sea and a spill of tonnes of plastic biobeads off the Sussex coast highlighted ongoing threats. Conservation teams are putting in immense work to safeguard and rehabilitate our shorelines.”