2025 Proclaimed the 'Year of the Octopus' Along England's Southern Shores.

Exceptionally high observations of a remarkably clever cephalopod during the summer season have prompted the naming of 2025 as “the year of the octopus” in an annual review of Britain’s seas.

A Perfect Storm Driving a Surge

A gentle winter coupled with a very warm springtime triggered a massive influx of common octopuses (*Octopus vulgaris*) to establish themselves along the shores from Cornwall to Devon, spanning the Cornish and Devonian coasts.

“The reported landings was of the order of about over a dozen times what we would typically see in this region,” commented a marine life specialist. “Based on the totals, around 233 thousand octopuses were present in UK waters this year – that’s a huge increase from historical averages.”

The Mediterranean octopus is indigenous to British seas but usually so scarce it is seldom observed. An explosive growth is caused by a combination of a mild winter and a warm breeding season. Such favorable circumstances meant increased juvenile survival, potentially supported by large numbers of a favored prey species seen in the area.

An Uncommon Occurrence

The most recent occasion, an octopus bloom comparable was recorded in 1950, with past documentation indicating the last bloom prior to that happened in the turn of the 20th century.

The sheer quantity of octopuses meant they could be easily spotted in shallow waters for the first time in recent history. Video footage show octopuses congregating together – unlike their typical solitary behavior – and moving along the bottom on their arm ends. One individual was even recorded reaching for submarine recording equipment.

“During a first dive off the Lizard peninsula this year I saw five octopuses,” the officer added. “They are sizeable. There are two types in the region. One species is rather small, football-sized, but these newcomers can be up to a metre and a half wide.”

Predictions and Marine Joy

A second gentle winter this coming winter suggests the potential another surge the following year, because historically, under these conditions, the blooms have repeated for two consecutive years.

“But, it's improbable, from previous blooms, 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 annual review also celebrated other “surprises, successes and joyful moments” across British shores, including:

• Highest-ever counts of gray seals seen in Cumbria.
• Peak numbers of the iconic seabirds on a Welsh island.
• The initial discovery of a rare sea slug in Yorkshire, normally residing farther south.
• A type of blenny spotted off the coast of a southern county for the first occasion.

Not All Positive News

The year had its low points, however. “The year was bookended 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 Sussex coast were serious issues. Staff and volunteers are putting in immense work to protect and restore our marine habitats.”