2025 Declared The Year for Octopuses Along England's South Coast.

Exceptionally high observations of a supremely intelligent sea creature during the summer season have resulted in the declaration of 2025 as the year for octopuses in an annual review of UK coastal waters.

A Perfect Storm Driving a Surge

An unusually warm winter and then a remarkably hot spring triggered a massive influx of common octopuses (*Octopus vulgaris*) to settle along the southern coastline of England, from Penzance in Cornwall to south Devon.

“The reported landings was of the order of about over a dozen times what we would typically see in Cornish waters,” commented a marine life specialist. “Based on the totals, around 233 thousand octopuses were present in these waters this year – representing a massive jump from the norm.”

The Mediterranean octopus is native to British seas but ordinarily in such small numbers it is infrequently encountered. An explosive growth is attributed to a combination of a mild winter and favorable spring temperatures. Such favorable circumstances meant a higher survival rate for young, potentially supported by large numbers of spider crabs seen in the area.

A Rare Phenomenon

The most recent occasion, a population surge of this scale this significant was recorded in the mid-20th century, with past documentation indicating the one before that occurred in 1900.

The sheer quantity of octopuses meant they could be readily observed in coastal areas for the first time in living memory. Diver videos show octopuses being sociable – contrary to their normally lone nature – and “walking” along the bottom on the tips of their limbs. A curious octopus was even seen investigating submarine recording equipment.

“During a first dive off the Lizard peninsula this year I saw multiple octopuses,” the specialist continued. “And these are big. Two kinds exist in these waters. One species is rather small, the size of a ball, but these common octopuses can be reaching impressive sizes.”

Predictions and Marine Joy

Another mild winter heading into next year meant it was possible another surge next year, because in the past, in similar situations, events have occurred consecutively for two consecutive years.

“Still, the chances are low, based on past events, that it will go on for a long time,” they cautioned. “The ocean is full of surprises currently so it’s hard to forecast.”

The assessment also highlighted further encouraging coastal sightings around the UK coastline, including:

• Highest-ever counts of grey seals observed in Cumbria.
• Exceptional populations of the iconic seabirds on Skomer.
• A first-ever sighting of an unusual mollusc in Yorkshire, normally residing farther south.
• A Mediterranean fish species discovered off the coast of a southern county for the inaugural time.

Environmental Concerns

The year had its low points, however. “The period was framed by marine incidents,” said a head of marine conservation. “A significant shipping incident in March and a spill of plastic pollution off the southern coast highlighted ongoing threats. Conservation teams are making huge efforts to safeguard and rehabilitate our shorelines.”