🔗 Share this article 2025 Proclaimed 'The Octopus Year' Off England's Southern Shores. Exceptionally high observations of one of the world's most intelligent invertebrates this past summer have prompted the designation of 2025 as the year for octopuses in an annual review of the nation's marine environment. A Perfect Storm Driving a Surge A gentle winter coupled with a very warm springtime catalyzed a huge population of common octopuses (*Octopus vulgaris*) to take up residence along the southern coastline of England, across the southwestern peninsula. “The scale of the catch was of the order of about over a dozen times what we would usually anticipate in the waters around Cornwall,” stated an ocean conservation expert. “Based on the totals, nearly a quarter of a million octopuses were caught in British seas this year – that’s a huge increase from what is typical.” The Mediterranean octopus is found in UK waters but usually so scarce it is infrequently encountered. An explosive growth is attributed to a combination of a mild winter and favorable spring temperatures. Such favorable circumstances meant more larvae, maybe aided by abundant stocks of other marine life also recorded. A Rare Phenomenon Previously, an octopus bloom this significant was recorded in 1950, with archival data indicating the previous major event was in the turn of the 20th century. The sheer quantity of octopuses meant they could be readily observed in shallow waters for the first time in living memory. Diver videos show octopuses gathering in groups – contrary to their normally lone nature – and ambulating along the ocean floor on their tentacle tips. One individual was even recorded reaching for an underwater camera. “On my initial dive there this year I saw multiple octopuses,” they noted. “They are sizeable. There are two types in these waters. One species is rather small, football-sized, but these common octopuses can be up to a metre and a half wide.” Looking Ahead & Coastal Highlights Another mild winter heading into next year could lead to a repeat event the following year, because based on records, in similar situations, events have occurred consecutively for two years running. “Still, the chances are low, looking at history, that it will go on for a long time,” they stated. “Marine life is unpredictable these days so it’s quite an unpredictable situation.” The report also noted further encouraging coastal sightings around the UK coastline, including: A record number of gray seals recorded in one northern region. Peak numbers of the iconic seabirds on a Welsh island. The initial discovery of the *Capellinia fustifera* nudibranch in Yorkshire, typically a southwestern species. A type of blenny spotted off the coast of Sussex for the first occasion. Not All Positive News Challenges were also present, however. “The period was framed by ecological challenges,” noted a conservation leader. “A significant shipping incident in March and the release of plastic pollution off the southern coast were serious issues. Staff and volunteers are putting in immense work to defend and heal our marine habitats.”
Exceptionally high observations of one of the world's most intelligent invertebrates this past summer have prompted the designation of 2025 as the year for octopuses in an annual review of the nation's marine environment. A Perfect Storm Driving a Surge A gentle winter coupled with a very warm springtime catalyzed a huge population of common octopuses (*Octopus vulgaris*) to take up residence along the southern coastline of England, across the southwestern peninsula. “The scale of the catch was of the order of about over a dozen times what we would usually anticipate in the waters around Cornwall,” stated an ocean conservation expert. “Based on the totals, nearly a quarter of a million octopuses were caught in British seas this year – that’s a huge increase from what is typical.” The Mediterranean octopus is found in UK waters but usually so scarce it is infrequently encountered. An explosive growth is attributed to a combination of a mild winter and favorable spring temperatures. Such favorable circumstances meant more larvae, maybe aided by abundant stocks of other marine life also recorded. A Rare Phenomenon Previously, an octopus bloom this significant was recorded in 1950, with archival data indicating the previous major event was in the turn of the 20th century. The sheer quantity of octopuses meant they could be readily observed in shallow waters for the first time in living memory. Diver videos show octopuses gathering in groups – contrary to their normally lone nature – and ambulating along the ocean floor on their tentacle tips. One individual was even recorded reaching for an underwater camera. “On my initial dive there this year I saw multiple octopuses,” they noted. “They are sizeable. There are two types in these waters. One species is rather small, football-sized, but these common octopuses can be up to a metre and a half wide.” Looking Ahead & Coastal Highlights Another mild winter heading into next year could lead to a repeat event the following year, because based on records, in similar situations, events have occurred consecutively for two years running. “Still, the chances are low, looking at history, that it will go on for a long time,” they stated. “Marine life is unpredictable these days so it’s quite an unpredictable situation.” The report also noted further encouraging coastal sightings around the UK coastline, including: A record number of gray seals recorded in one northern region. Peak numbers of the iconic seabirds on a Welsh island. The initial discovery of the *Capellinia fustifera* nudibranch in Yorkshire, typically a southwestern species. A type of blenny spotted off the coast of Sussex for the first occasion. Not All Positive News Challenges were also present, however. “The period was framed by ecological challenges,” noted a conservation leader. “A significant shipping incident in March and the release of plastic pollution off the southern coast were serious issues. Staff and volunteers are putting in immense work to defend and heal our marine habitats.”