🔗 Share this article 2025 Hailed as 'The Octopus Year' Along England's South Coast. Exceptionally high encounters of a supremely intelligent sea creature during the summer season have led to the declaration of 2025 as “the year of the octopus” in a yearly report of UK coastal waters. Ideal Conditions Leading to an Explosion A gentle winter and then an exceptionally warm spring catalyzed a huge population of *Octopus vulgaris* to establish themselves along the shores from Cornwall to Devon, spanning the Cornish and Devonian coasts. “The reported landings was approximately 13 times what we would normally expect in Cornish waters,” commented a marine conservation officer. “Based on the totals, around 233 thousand octopuses were found in British seas this year – that’s a huge increase from what is typical.” *Octopus vulgaris* is native to UK waters but ordinarily in such small numbers it is infrequently encountered. A population bloom is the result of a combination of gentle winter conditions and favorable spring temperatures. These ideal conditions meant increased juvenile survival, possibly in part fuelled by large numbers of a favored prey species also recorded. A Historic Event The most recent occasion, such an octopus proliferation comparable was recorded in 1950, with historical records indicating the previous major event occurred in 1900. The huge numbers of octopuses meant they could be frequently seen in nearshore environments for the first time in living memory. Diver videos show octopuses gathering in groups – they are usually solitary – and ambulating along the ocean floor on the tips of their limbs. One creature was even filmed grabbing an underwater camera. “The first time I dived in that area this year I saw multiple octopuses,” the specialist continued. “And these are big. There are two types in these waters. One species is smaller, the size of a ball, but the *Octopus vulgaris* can be reaching impressive sizes.” Predictions and Marine Joy A second gentle winter heading into next year could lead to a repeat event in 2026, 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 become a permanent fixture,” they said. “But the sea keeps giving us surprises at the moment so it’s quite an unpredictable situation.” The report also celebrated additional positive marine news along the coast, including: Highest-ever counts of gray seals seen in one northern region. Record numbers of puffins on an island off Wales. A first-ever sighting of the *Capellinia fustifera* nudibranch in Yorkshire, usually found in the south-west. A variable blenny discovered off the coast of Sussex for the first occasion. A Note of Caution Not everything was good news, however. “The period was framed by environmental disasters,” said a head of marine conservation. “A significant shipping incident in March and a spill of industrial pellets off the Sussex coast highlighted ongoing threats. Conservation teams are putting in immense work to protect and restore our shorelines.”
Exceptionally high encounters of a supremely intelligent sea creature during the summer season have led to the declaration of 2025 as “the year of the octopus” in a yearly report of UK coastal waters. Ideal Conditions Leading to an Explosion A gentle winter and then an exceptionally warm spring catalyzed a huge population of *Octopus vulgaris* to establish themselves along the shores from Cornwall to Devon, spanning the Cornish and Devonian coasts. “The reported landings was approximately 13 times what we would normally expect in Cornish waters,” commented a marine conservation officer. “Based on the totals, around 233 thousand octopuses were found in British seas this year – that’s a huge increase from what is typical.” *Octopus vulgaris* is native to UK waters but ordinarily in such small numbers it is infrequently encountered. A population bloom is the result of a combination of gentle winter conditions and favorable spring temperatures. These ideal conditions meant increased juvenile survival, possibly in part fuelled by large numbers of a favored prey species also recorded. A Historic Event The most recent occasion, such an octopus proliferation comparable was recorded in 1950, with historical records indicating the previous major event occurred in 1900. The huge numbers of octopuses meant they could be frequently seen in nearshore environments for the first time in living memory. Diver videos show octopuses gathering in groups – they are usually solitary – and ambulating along the ocean floor on the tips of their limbs. One creature was even filmed grabbing an underwater camera. “The first time I dived in that area this year I saw multiple octopuses,” the specialist continued. “And these are big. There are two types in these waters. One species is smaller, the size of a ball, but the *Octopus vulgaris* can be reaching impressive sizes.” Predictions and Marine Joy A second gentle winter heading into next year could lead to a repeat event in 2026, 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 become a permanent fixture,” they said. “But the sea keeps giving us surprises at the moment so it’s quite an unpredictable situation.” The report also celebrated additional positive marine news along the coast, including: Highest-ever counts of gray seals seen in one northern region. Record numbers of puffins on an island off Wales. A first-ever sighting of the *Capellinia fustifera* nudibranch in Yorkshire, usually found in the south-west. A variable blenny discovered off the coast of Sussex for the first occasion. A Note of Caution Not everything was good news, however. “The period was framed by environmental disasters,” said a head of marine conservation. “A significant shipping incident in March and a spill of industrial pellets off the Sussex coast highlighted ongoing threats. Conservation teams are putting in immense work to protect and restore our shorelines.”