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

Exceptionally high sightings of a remarkably clever cephalopod this past summer have resulted in the declaration of 2025 as the octopus's year in a seasonal assessment of Britain’s seas.

A Perfect Storm Driving a Surge

A gentle winter coupled with an exceptionally warm spring triggered a huge population of common octopuses (*Octopus vulgaris*) to take up residence along England’s south coast, across the southwestern peninsula.

“The volume of octopuses caught was roughly thirteen times what we would normally expect in this region,” stated an ocean conservation expert. “Based on the totals, around 233 thousand octopuses were caught in British seas this year – that’s a huge increase from the norm.”

*Octopus vulgaris* is found in these waters but typically so rare it is rarely seen. A sudden increase is the result of the dual effect of gentle winter conditions and favorable spring temperatures. Such favorable circumstances meant more larvae, maybe aided by large numbers of spider crabs also recorded.

An Uncommon Occurrence

The last time, such an octopus proliferation of this size was recorded in 1950, with past documentation indicating the last bloom prior to that occurred in the turn of the 20th century.

The huge numbers of octopuses meant they could be readily observed in nearshore environments for a rare occurrence. Diver videos show octopuses congregating together – unlike their typical solitary behavior – and “walking” along the ocean floor on the tips of their limbs. One individual was even seen investigating an underwater camera.

“The first time I dived in that area this year I saw five of these creatures,” they noted. “And these are big. There are two types in the region. The curled octopus is smaller, about the size of a football, but the *Octopus vulgaris* can be reaching impressive sizes.”

Future Prospects and Other Surprises

Another mild winter this coming winter suggests the potential a second bloom the following year, because based on records, with such patterns, populations have surged again for two consecutive years.

“However, it is unlikely, looking at history, that it will become a permanent fixture,” they said. “But the sea keeps giving us surprises at the moment so it’s hard to forecast.”

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

• Highest-ever counts of grey seals recorded in one northern region.
• Peak numbers of the iconic seabirds on Skomer.
• The first recording of an unusual mollusc in a northern county, normally residing farther south.
• A variable blenny spotted off the coast of a southern county for the first time.

Environmental Concerns

Not everything was good news, however. “The period was framed by ecological challenges,” said a head of marine conservation. “A major tanker collision in March and the release of tonnes of plastic biobeads off the Sussex coast served as stark reminders. Conservation teams are putting in immense work to safeguard and rehabilitate our marine habitats.”