2025 Declared 'The Octopus Year' Off England's Southern Shores.
Exceptionally high observations of a remarkably clever cephalopod over the summer months have led to the designation of 2025 as the year for octopuses in a seasonal assessment of UK coastal waters.
Ideal Conditions Leading to an Explosion
A mild winter followed by an exceptionally warm spring prompted unprecedented numbers of Mediterranean octopuses to settle along the southern coastline of England, spanning the Cornish and Devonian coasts.
“The volume of octopuses caught was approximately thirteen times what we would typically see in this region,” commented an ocean conservation expert. “Calculating the figures, nearly a quarter of a million octopuses were caught in UK waters this year – that’s a huge increase from the norm.”
*Octopus vulgaris* is found in these waters but typically so rare it is infrequently encountered. A population bloom is attributed to the dual effect of a mild winter and favorable spring temperatures. This perfect scenario meant more larvae, potentially supported by abundant stocks of spider crabs seen in the area.
An Uncommon Occurrence
Previously, a population surge of this scale comparable was observed in the mid-20th century, with historical records indicating the previous major event was in 1900.
The sheer quantity of octopuses meant they could be readily observed in shallow waters for the first time in recent history. Underwater recordings show octopuses gathering in groups – they are usually solitary – and “walking” along the bottom on their arm ends. A curious octopus was even seen investigating a diver's camera.
“On my initial dive there this year I saw five octopuses,” the officer added. “They are large specimens. Two kinds exist in these waters. The curled octopus is rather small, football-sized, but these common octopuses can be with a span of 1.5 meters.”
Predictions and Marine Joy
Another mild winter heading into next year suggests the potential a second bloom the following year, because historically, in similar situations, events have occurred consecutively for two years running.
“But, it's improbable, based on past events, that it will go on for a long time,” they stated. “But the sea keeps giving us surprises currently so it’s hard to forecast.”
The report also highlighted other “surprises, successes and joyful moments” along the coast, including:
- Highest-ever counts of grey seals recorded in Cumbria.
- Exceptional populations of puffins on an island off Wales.
- The first recording of an unusual mollusc in a northern county, usually found in the south-west.
- A variable blenny discovered off the coast of a southern county for the inaugural time.
A Note of Caution
The year had its low points, however. “The calendar year was marked by environmental disasters,” said a head of marine conservation. “A major tanker collision in the North Sea and the release of industrial pellets off the southern coast served as stark reminders. Conservation teams are putting in immense work to defend and heal our coasts.”
