2025 Proclaimed The Year for Octopuses Along England's Southern Shores.

Unprecedented encounters of one of the world's most intelligent invertebrates this past summer have led to the naming of 2025 as “the year of the octopus” in a yearly report of UK coastal waters.

A Perfect Storm Driving a Surge

A mild winter coupled with a very warm springtime triggered unprecedented numbers of common octopuses (*Octopus vulgaris*) to establish themselves along England’s south coast, from Penzance in Cornwall to south Devon.

“The volume of octopuses caught was roughly over a dozen times what we would typically see in this region,” commented an ocean conservation expert. “When we added up the numbers, approximately 233,000 octopuses were caught in these waters 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. A population bloom is attributed to a combination of gentle winter conditions and favorable spring temperatures. This perfect scenario meant increased juvenile survival, maybe aided by abundant stocks of other marine life seen in the area.

A Rare Phenomenon

The last time, an octopus bloom this significant was documented in the mid-20th century, with past documentation indicating the one before that occurred in 1900.

The huge numbers of octopuses meant they could be frequently seen in shallow waters for the first time in recent history. Underwater recordings show octopuses gathering in groups – unlike their typical solitary behavior – and moving along the bottom on the tips of their limbs. One individual was even seen investigating a diver's camera.

“During a first dive off the Lizard peninsula this year I saw five octopuses,” the specialist continued. “And these are big. Two kinds exist in these waters. The curled octopus is smaller, the size of a ball, but these newcomers can be reaching impressive sizes.”

Predictions and Marine Joy

If conditions remain mild this coming winter meant it was possible a repeat event in 2026, because in the past, under these conditions, the blooms have repeated for two years running.

“But, it's improbable, looking at history, that it will go on for a long time,” they stated. “But the sea keeps giving us surprises currently so it’s quite an unpredictable situation.”

The assessment also highlighted additional positive marine news around the UK coastline, including:

• A record number of grey seals recorded in Cumbria.
• Record numbers of puffins on an island off Wales.
• The first recording of the *Capellinia fustifera* nudibranch in a northern county, typically a southwestern species.
• A variable blenny spotted off the coast of Sussex for the first time.

Not All Positive News

Not everything was good news, however. “The period was framed by ecological challenges,” stated an expert. “A major tanker collision in March and a spill of tonnes of plastic biobeads off the southern coast were serious issues. Staff and volunteers are putting in immense work to defend and heal our coasts.”