🔗 Share this article 2025 Proclaimed 'The Octopus Year' Off Britain's South Coast. Exceptionally high observations of a supremely intelligent sea creature this past summer have resulted in the designation of 2025 as the year for octopuses in an annual review of UK coastal waters. A Confluence of Factors Driving a Surge An unusually warm winter coupled with a very warm springtime prompted unprecedented numbers of *Octopus vulgaris* to settle along the southern coastline of England, across the southwestern peninsula. “The volume of octopuses caught was roughly thirteen times what we would typically see in the waters around Cornwall,” explained an ocean conservation expert. “Calculating the figures, nearly a quarter of a million octopuses were caught in these waters this year – that’s a huge increase from what is typical.” The Mediterranean octopus is indigenous to these waters but usually so scarce it is rarely seen. A population bloom is attributed to the dual effect of a mild winter and favorable spring temperatures. This perfect scenario meant more larvae, maybe aided by significant populations of spider crabs seen in the area. A Rare Phenomenon Previously, a population surge of this scale comparable was documented in the mid-20th century, with historical records indicating the last bloom prior to that was in 1900. The huge numbers of octopuses meant they could be easily spotted in shallow waters for a rare occurrence. Underwater recordings show octopuses congregating together – they are usually solitary – and “walking” along the ocean floor on the tips of their limbs. One individual 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. “They are sizeable. Two kinds exist in these waters. One species is quite small, football-sized, but these common octopuses can be reaching impressive sizes.” Future Prospects and Other Surprises If conditions remain mild this coming winter could lead to a repeat event next year, because historically, with such patterns, the blooms have repeated for two years in a row. “Still, the chances are low, from previous blooms, that it will go on for a long time,” they stated. “But the sea keeps giving us surprises at the moment so it’s quite an unpredictable situation.” The assessment also noted further encouraging coastal sightings across British shores, including: A record number of grey seals recorded in one northern region. Exceptional populations of puffins on an island off Wales. The initial discovery of a rare sea slug in a northern county, normally residing farther south. A variable blenny found off the coast of Sussex for the first time. Environmental Concerns Challenges were also present, however. “The period was framed by ecological challenges,” said a head of marine conservation. “A significant shipping incident in March and a spill of tonnes of plastic biobeads off the Sussex coast highlighted ongoing threats. Dedicated individuals are making huge efforts to defend and heal our shorelines.”
Exceptionally high observations of a supremely intelligent sea creature this past summer have resulted in the designation of 2025 as the year for octopuses in an annual review of UK coastal waters. A Confluence of Factors Driving a Surge An unusually warm winter coupled with a very warm springtime prompted unprecedented numbers of *Octopus vulgaris* to settle along the southern coastline of England, across the southwestern peninsula. “The volume of octopuses caught was roughly thirteen times what we would typically see in the waters around Cornwall,” explained an ocean conservation expert. “Calculating the figures, nearly a quarter of a million octopuses were caught in these waters this year – that’s a huge increase from what is typical.” The Mediterranean octopus is indigenous to these waters but usually so scarce it is rarely seen. A population bloom is attributed to the dual effect of a mild winter and favorable spring temperatures. This perfect scenario meant more larvae, maybe aided by significant populations of spider crabs seen in the area. A Rare Phenomenon Previously, a population surge of this scale comparable was documented in the mid-20th century, with historical records indicating the last bloom prior to that was in 1900. The huge numbers of octopuses meant they could be easily spotted in shallow waters for a rare occurrence. Underwater recordings show octopuses congregating together – they are usually solitary – and “walking” along the ocean floor on the tips of their limbs. One individual 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. “They are sizeable. Two kinds exist in these waters. One species is quite small, football-sized, but these common octopuses can be reaching impressive sizes.” Future Prospects and Other Surprises If conditions remain mild this coming winter could lead to a repeat event next year, because historically, with such patterns, the blooms have repeated for two years in a row. “Still, the chances are low, from previous blooms, that it will go on for a long time,” they stated. “But the sea keeps giving us surprises at the moment so it’s quite an unpredictable situation.” The assessment also noted further encouraging coastal sightings across British shores, including: A record number of grey seals recorded in one northern region. Exceptional populations of puffins on an island off Wales. The initial discovery of a rare sea slug in a northern county, normally residing farther south. A variable blenny found off the coast of Sussex for the first time. Environmental Concerns Challenges were also present, however. “The period was framed by ecological challenges,” said a head of marine conservation. “A significant shipping incident in March and a spill of tonnes of plastic biobeads off the Sussex coast highlighted ongoing threats. Dedicated individuals are making huge efforts to defend and heal our shorelines.”