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Diver mistakes mysterious object on UK beach for a buoy, discovers highly poisonous tropical fish

A mysterious object on a UK beach turned out to be a poisonous pufferfish, leaving a diver surprised.

Published on: Nov 2, 2026, 13:41:16 IST
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A diver walking along a beach in the UK mistook a mysterious object washed up on the shore for a buoy or plastic bag, only to discover that it was a highly poisonous tropical fish.

A diver was shocked after finding a deadly tropical pufferfish washed up on a beach in Dorset, UK. (Representational image generated using AI)
A diver was shocked after finding a deadly tropical pufferfish washed up on a beach in Dorset, UK. (Representational image generated using AI)

The unusual discovery was made by Owen Booty at Knoll Beach in Studland, Dorset. The dead pufferfish, measuring approximately 17 inches (43 cm), was found fully inflated on the sand.

(Also read: Rare deep-sea fish with transparent head and green eyes filmed in the depths of Pacific Ocean. Watch)

According to a report by The Independent, the fish is believed to have been swept hundreds of miles off course by powerful storms.

Diver recalls unusual discovery

Booty, who works with Freedive Life, spotted the strange object while walking along the beach after rough sea conditions prevented him from diving.

"I was out walking along Knoll Beach as the sea was a little too rough to get in the water, when I spotted what initially looked like a buoy or plastic bag washed up on the shore," he said.

He added: "I walked over to investigate and realised it was actually a dead fish. Having encountered pufferfish while diving abroad, I had a good idea what it was, but sent the photographs to Dorset Wildlife Trust and a friend who's a marine biologist for confirmation."

Describing his surprise, Booty said: "I spend a lot of time in the water exploring Dorset's coastline. We're fortunate to have some fantastic marine life right on our doorstep. But despite all the time I've spent diving locally, I certainly wasn't expecting to find a pufferfish washed up on the beach."

How did the tropical fish reach the UK?

Pufferfish are generally found in tropical and subtropical waters of the Atlantic, Indian and Pacific oceans, making their appearance along Britain's coastline unusual.

The fish is believed to have reached Dorset following Storm Austen and Storm Boelo, although its exact journey remains unclear.

Pufferfish are known for their distinctive defence mechanism, which allows them to inflate their bodies into balloon-like shapes, making them difficult for predators to swallow.

Why are pufferfish dangerous?

Despite being dead, pufferfish can remain dangerous because their organs and skin may contain tetrodotoxin, a powerful neurotoxin.

(Also read: When fish fell from the sky: The bizarre 1947 incident in a US town explained)

According to the Natural History Museum, tetrodotoxin is more than 1,000 times as potent as cyanide and can cause paralysis and respiratory failure.

A spokesperson for Dorset Wildlife Trust said: "Usually found in open water in the warmer parts of the Atlantic as well as the Indian and Pacific oceans, these fish are a rare sight in the UK, but they do turn up occasionally."

The charity advised people not to handle pufferfish and urged anyone who spots one to report it.

  • Mahipal Singh Chouhan
    ABOUT THE AUTHOR
    Mahipal Singh Chouhan

    Mahipal Singh Chouhan is a Senior Content Producer at Hindustan Times Digital, with nearly five years of experience in digital journalism and content production. He primarily covers offbeat, trending and human-interest stories, with a focus on emerging social media trends, online conversations and real-world incidents that capture public attention. At Hindustan Times, Mahipal works on identifying and developing fast-moving digital stories, adding context and journalistic perspective to viral moments while maintaining accuracy, clarity and readability for online audiences. Before joining Hindustan Times Digital, he was associated with DNA India, where he gained experience in newsroom workflows and digital storytelling. He holds a degree in Journalism and Mass Communication from the Vivekananda Institute of Professional Studies, Delhi. Beyond journalism, he has a keen interest in history and sports and enjoys expanding his general knowledge.Read More

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