It takes some effort to beat serving a 55% abv beer encased a dead squirrel, but BrewDog may have topped its previous endeavours by brewing a beer on the ocean floor.

Last week the Scots independent brewer rolled out its 7.1% abv beer Sunk Punk. The new beer was brewed at the bottom of the North Sea in a specially developed tank that flew the Jolly Roger flag.

Just 960 bottles of the beer have been produced. The limited edition line will be sold via the company's website.

Earlier this year Brewdog unveiled its Equity for Punks fundraising scheme, which aimed to generate £2.2m cash to plough into the business.

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