🔗 Share this article 2025 Declared the 'Year of the Octopus' Along Britain's Southern Shores. Record-breaking sightings of one of the world's most intelligent invertebrates during the summer season have led to the declaration of 2025 as the year for octopuses in an annual review of UK coastal waters. Ideal Conditions Driving a Surge A gentle winter coupled with a remarkably hot spring triggered unprecedented numbers of *Octopus vulgaris* to establish themselves along the southern coastline of England, across the southwestern peninsula. “The scale of the catch was of the order of about 13 times what we would typically see in Cornish waters,” stated an ocean conservation expert. “Based on the totals, approximately 233,000 octopuses were caught in UK waters this year – that’s a huge increase from the norm.” *Octopus vulgaris* is found in British seas but usually so scarce it is seldom observed. An explosive growth is the result of a combination of a mild winter and favorable spring temperatures. This perfect scenario meant increased juvenile survival, maybe aided by large numbers of a favored prey species also recorded. An Uncommon Occurrence Previously, such an octopus proliferation of this size was observed in the mid-20th century, with historical records indicating the one before that was in 1900. The remarkable abundance of octopuses meant they could be easily spotted in nearshore environments for the first time in recent history. Underwater recordings show octopuses congregating together – unlike their typical solitary behavior – and ambulating along the bottom on the tips of their limbs. A curious octopus was even seen investigating a diver's camera. “The first time I dived off the Lizard peninsula this year I saw five of these creatures,” the officer added. “And these are big. Two kinds exist in the region. The curled octopus is smaller, about the size of a football, but these newcomers can be up to a metre and a half wide.” Future Prospects and Other Surprises A second gentle winter this coming winter could lead to a repeat event the following year, because based on records, in similar situations, the blooms have repeated for two years in a row. “However, it is unlikely, based on past events, that it will go on for a long time,” they said. “But the sea keeps giving us surprises these days so it’s quite an unpredictable situation.” The assessment also noted further encouraging coastal sightings along the coast, including: A record number of grey seals recorded in one northern region. Record numbers of puffins on Skomer. The initial discovery of an unusual mollusc in a northern county, typically a southwestern species. A variable blenny discovered off the coast of Sussex for the first time. Not All Positive News The year had its low points, however. “The period was framed by environmental disasters,” noted a conservation leader. “A major tanker collision in the North Sea and an accidental discharge of plastic pollution off the southern coast were serious issues. Dedicated individuals are making huge efforts to defend and heal our marine habitats.”
Record-breaking sightings of one of the world's most intelligent invertebrates during the summer season have led to the declaration of 2025 as the year for octopuses in an annual review of UK coastal waters. Ideal Conditions Driving a Surge A gentle winter coupled with a remarkably hot spring triggered unprecedented numbers of *Octopus vulgaris* to establish themselves along the southern coastline of England, across the southwestern peninsula. “The scale of the catch was of the order of about 13 times what we would typically see in Cornish waters,” stated an ocean conservation expert. “Based on the totals, approximately 233,000 octopuses were caught in UK waters this year – that’s a huge increase from the norm.” *Octopus vulgaris* is found in British seas but usually so scarce it is seldom observed. An explosive growth is the result of a combination of a mild winter and favorable spring temperatures. This perfect scenario meant increased juvenile survival, maybe aided by large numbers of a favored prey species also recorded. An Uncommon Occurrence Previously, such an octopus proliferation of this size was observed in the mid-20th century, with historical records indicating the one before that was in 1900. The remarkable abundance of octopuses meant they could be easily spotted in nearshore environments for the first time in recent history. Underwater recordings show octopuses congregating together – unlike their typical solitary behavior – and ambulating along the bottom on the tips of their limbs. A curious octopus was even seen investigating a diver's camera. “The first time I dived off the Lizard peninsula this year I saw five of these creatures,” the officer added. “And these are big. Two kinds exist in the region. The curled octopus is smaller, about the size of a football, but these newcomers can be up to a metre and a half wide.” Future Prospects and Other Surprises A second gentle winter this coming winter could lead to a repeat event the following year, because based on records, in similar situations, the blooms have repeated for two years in a row. “However, it is unlikely, based on past events, that it will go on for a long time,” they said. “But the sea keeps giving us surprises these days so it’s quite an unpredictable situation.” The assessment also noted further encouraging coastal sightings along the coast, including: A record number of grey seals recorded in one northern region. Record numbers of puffins on Skomer. The initial discovery of an unusual mollusc in a northern county, typically a southwestern species. A variable blenny discovered off the coast of Sussex for the first time. Not All Positive News The year had its low points, however. “The period was framed by environmental disasters,” noted a conservation leader. “A major tanker collision in the North Sea and an accidental discharge of plastic pollution off the southern coast were serious issues. Dedicated individuals are making huge efforts to defend and heal our marine habitats.”