🔗 Share this article 2025 Proclaimed 'The Octopus Year' Off Britain's Southern Shores. Unprecedented encounters of a remarkably clever cephalopod over the summer months have prompted the declaration of 2025 as the octopus's year in an annual review of UK coastal waters. A Perfect Storm Leading to an Explosion A gentle winter followed by a very warm springtime prompted unprecedented numbers of Mediterranean octopuses to settle along the shores from Cornwall to Devon, across the southwestern peninsula. “The reported landings was approximately over a dozen times what we would usually anticipate in Cornish waters,” explained a marine conservation officer. “Calculating the figures, approximately 233,000 octopuses were present in British seas this year – representing a massive jump from the norm.” The common octopus is found in British seas but typically so rare it is seldom observed. An explosive growth is the result of a combination of gentle winter conditions and favorable spring temperatures. Such favorable circumstances meant more larvae, maybe aided by large numbers of a favored prey species seen in the area. An Uncommon Occurrence Previously, a population surge of this scale this significant was documented in the mid-20th century, with historical records indicating the last bloom prior to that happened in 1900. The sheer quantity of octopuses meant they could be readily observed in nearshore environments for the first time in recent history. Underwater recordings show octopuses gathering in groups – unlike their typical solitary behavior – and moving along the ocean floor on their arm ends. One creature was even filmed grabbing an underwater camera. “During a first dive in that area this year I saw multiple octopuses,” the specialist continued. “They are large specimens. There are two types in these waters. The curled octopus is quite small, about the size of a football, but these common octopuses can be up to a metre and a half wide.” Future Prospects and Other Surprises If conditions remain mild heading into next year suggests the potential another surge the following year, because in the past, under these conditions, events have occurred consecutively for two years running. “Still, the chances are low, from previous blooms, that it will become a permanent fixture,” they said. “Marine life is unpredictable at the moment so it’s quite an unpredictable situation.” The annual review also highlighted further encouraging coastal sightings around the UK coastline, including: A record number of grey seals seen in Cumbria. Record numbers of the iconic seabirds on Skomer. The initial discovery of an unusual mollusc in Yorkshire, usually found in the south-west. A variable blenny found off the coast of a southern county for the first time. Not All Positive News The year had its low points, however. “The period was framed by ecological challenges,” said a head of marine conservation. “A major tanker collision in the North Sea and an accidental discharge of industrial pellets off the southern coast served as stark reminders. Conservation teams are putting in immense work to defend and heal our coasts.”
Unprecedented encounters of a remarkably clever cephalopod over the summer months have prompted the declaration of 2025 as the octopus's year in an annual review of UK coastal waters. A Perfect Storm Leading to an Explosion A gentle winter followed by a very warm springtime prompted unprecedented numbers of Mediterranean octopuses to settle along the shores from Cornwall to Devon, across the southwestern peninsula. “The reported landings was approximately over a dozen times what we would usually anticipate in Cornish waters,” explained a marine conservation officer. “Calculating the figures, approximately 233,000 octopuses were present in British seas this year – representing a massive jump from the norm.” The common octopus is found in British seas but typically so rare it is seldom observed. An explosive growth is the result of a combination of gentle winter conditions and favorable spring temperatures. Such favorable circumstances meant more larvae, maybe aided by large numbers of a favored prey species seen in the area. An Uncommon Occurrence Previously, a population surge of this scale this significant was documented in the mid-20th century, with historical records indicating the last bloom prior to that happened in 1900. The sheer quantity of octopuses meant they could be readily observed in nearshore environments for the first time in recent history. Underwater recordings show octopuses gathering in groups – unlike their typical solitary behavior – and moving along the ocean floor on their arm ends. One creature was even filmed grabbing an underwater camera. “During a first dive in that area this year I saw multiple octopuses,” the specialist continued. “They are large specimens. There are two types in these waters. The curled octopus is quite small, about the size of a football, but these common octopuses can be up to a metre and a half wide.” Future Prospects and Other Surprises If conditions remain mild heading into next year suggests the potential another surge the following year, because in the past, under these conditions, events have occurred consecutively for two years running. “Still, the chances are low, from previous blooms, that it will become a permanent fixture,” they said. “Marine life is unpredictable at the moment so it’s quite an unpredictable situation.” The annual review also highlighted further encouraging coastal sightings around the UK coastline, including: A record number of grey seals seen in Cumbria. Record numbers of the iconic seabirds on Skomer. The initial discovery of an unusual mollusc in Yorkshire, usually found in the south-west. A variable blenny found off the coast of a southern county for the first time. Not All Positive News The year had its low points, however. “The period was framed by ecological challenges,” said a head of marine conservation. “A major tanker collision in the North Sea and an accidental discharge of industrial pellets off the southern coast served as stark reminders. Conservation teams are putting in immense work to defend and heal our coasts.”