🔗 Share this article 2025 Hailed as 'The Octopus Year' Along England's Southern Shores. Unprecedented encounters of a supremely intelligent sea creature during the summer season have prompted the declaration of 2025 as the octopus's year in a seasonal assessment of UK coastal waters. A Confluence of Factors Driving a Surge An unusually warm winter and then an exceptionally warm spring prompted a massive influx of *Octopus vulgaris* to settle along England’s south coast, spanning the Cornish and Devonian coasts. “The scale of the catch was of the order of about over a dozen times what we would usually anticipate in Cornish waters,” commented a marine life specialist. “Based on the totals, nearly a quarter of a million octopuses were present in these waters this year – representing a massive jump from what is typical.” *Octopus vulgaris* is native to UK waters but ordinarily in such small numbers it is seldom observed. An explosive growth is the result of a combination of a mild winter and favorable spring temperatures. These ideal conditions meant increased juvenile survival, potentially supported by abundant stocks of spider crabs seen in the area. A Rare Phenomenon The last time, such an octopus proliferation of this size was recorded in the mid-20th century, with archival data indicating the last bloom prior to that was in the turn of the 20th century. The sheer quantity of octopuses meant they could be easily spotted in nearshore environments for a rare occurrence. Diver videos show octopuses gathering in groups – they are usually solitary – and “walking” along the seabed on their arm ends. One individual was even filmed grabbing a diver's camera. “During a first dive off the Lizard peninsula this year I saw five octopuses,” they noted. “They are sizeable. We have two species in the region. One species is smaller, football-sized, but these common octopuses can be reaching impressive sizes.” Future Prospects and Other Surprises Another mild winter heading into next year suggests the potential another surge in 2026, because historically, in similar situations, events have occurred consecutively for two years in a row. “But, it's improbable, looking at history, that it will persist indefinitely,” they cautioned. “The ocean is full of surprises these days so it’s quite an unpredictable situation.” The report also celebrated additional positive marine news around the UK coastline, including: Highest-ever counts of gray seals seen in Cumbria. Record numbers of the iconic seabirds on an island off Wales. The initial discovery of a rare sea slug in Yorkshire, typically a southwestern species. A Mediterranean fish species found off the coast of a southern county for the first time. Environmental Concerns The year had its low points, however. “The calendar year was marked by ecological challenges,” stated an expert. “A major tanker collision in the North Sea and a spill of industrial pellets off the southern coast were serious issues. Staff and volunteers are making huge efforts to protect and restore our shorelines.”
Unprecedented encounters of a supremely intelligent sea creature during the summer season have prompted the declaration of 2025 as the octopus's year in a seasonal assessment of UK coastal waters. A Confluence of Factors Driving a Surge An unusually warm winter and then an exceptionally warm spring prompted a massive influx of *Octopus vulgaris* to settle along England’s south coast, spanning the Cornish and Devonian coasts. “The scale of the catch was of the order of about over a dozen times what we would usually anticipate in Cornish waters,” commented a marine life specialist. “Based on the totals, nearly a quarter of a million octopuses were present in these waters this year – representing a massive jump from what is typical.” *Octopus vulgaris* is native to UK waters but ordinarily in such small numbers it is seldom observed. An explosive growth is the result of a combination of a mild winter and favorable spring temperatures. These ideal conditions meant increased juvenile survival, potentially supported by abundant stocks of spider crabs seen in the area. A Rare Phenomenon The last time, such an octopus proliferation of this size was recorded in the mid-20th century, with archival data indicating the last bloom prior to that was in the turn of the 20th century. The sheer quantity of octopuses meant they could be easily spotted in nearshore environments for a rare occurrence. Diver videos show octopuses gathering in groups – they are usually solitary – and “walking” along the seabed on their arm ends. One individual was even filmed grabbing a diver's camera. “During a first dive off the Lizard peninsula this year I saw five octopuses,” they noted. “They are sizeable. We have two species in the region. One species is smaller, football-sized, but these common octopuses can be reaching impressive sizes.” Future Prospects and Other Surprises Another mild winter heading into next year suggests the potential another surge in 2026, because historically, in similar situations, events have occurred consecutively for two years in a row. “But, it's improbable, looking at history, that it will persist indefinitely,” they cautioned. “The ocean is full of surprises these days so it’s quite an unpredictable situation.” The report also celebrated additional positive marine news around the UK coastline, including: Highest-ever counts of gray seals seen in Cumbria. Record numbers of the iconic seabirds on an island off Wales. The initial discovery of a rare sea slug in Yorkshire, typically a southwestern species. A Mediterranean fish species found off the coast of a southern county for the first time. Environmental Concerns The year had its low points, however. “The calendar year was marked by ecological challenges,” stated an expert. “A major tanker collision in the North Sea and a spill of industrial pellets off the southern coast were serious issues. Staff and volunteers are making huge efforts to protect and restore our shorelines.”