2025 Declared The Year for Octopuses Along England's South Coast.
Record-breaking observations of a supremely intelligent sea creature during the summer season have resulted in the declaration of 2025 as “the year of the octopus” in a seasonal assessment of the nation's marine environment.
A Confluence of Factors Leading to an Explosion
An unusually warm winter coupled with a very warm springtime prompted a massive influx of *Octopus vulgaris* to settle along the shores from Cornwall to Devon, across the southwestern peninsula.
“The reported landings was of the order of about over a dozen times what we would typically see in the waters around Cornwall,” commented a marine conservation officer. “When we added up the numbers, nearly a quarter of a million octopuses were caught in these waters this year – that’s a huge increase from the norm.”
*Octopus vulgaris* is indigenous to British seas but usually so scarce it is rarely seen. A sudden increase is attributed to a combination of gentle winter conditions and favorable spring temperatures. Such favorable circumstances meant increased juvenile survival, possibly in part fuelled by abundant stocks of spider crabs also recorded.
A Historic Event
Previously, an octopus bloom comparable was observed in 1950, with historical records indicating the previous major event occurred in 1900.
The remarkable abundance of octopuses meant they could be frequently seen in nearshore environments for the first time in living memory. Diver videos show octopuses congregating together – they are usually solitary – and “walking” along the bottom on the tips of their limbs. One creature was even recorded reaching for a diver's camera.
“During a first dive off the Lizard peninsula this year I saw five of these creatures,” the specialist continued. “And these are big. We have two species in UK waters. The curled octopus is rather small, about the size of a football, but the *Octopus vulgaris* can be with a span of 1.5 meters.”
Future Prospects and Other Surprises
If conditions remain mild heading into next year meant it was possible a repeat event the following year, because historically, in similar situations, populations have surged again for two consecutive years.
“But, it's improbable, looking at history, that it will become a permanent fixture,” they said. “The ocean is full of surprises currently so it’s a very uncertain scenario.”
The assessment also noted further encouraging coastal sightings along the coast, including:
- Highest-ever counts of grey seals recorded in one northern region.
- Exceptional populations of puffins on a Welsh island.
- The initial discovery of a rare sea slug in Yorkshire, usually found in the south-west.
- A type of blenny spotted off the coast of a southern county for the first occasion.
A Note of Caution
Challenges were also present, however. “The calendar year was marked by ecological challenges,” noted a conservation leader. “A significant shipping incident in March and the release of industrial pellets off the Sussex coast were serious issues. Conservation teams are making huge efforts to protect and restore our marine habitats.”
