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A beach in Jersey was closed to the public on Saturday after a huge shark was spotted in the water.

The Royal National Lifeboat Institution (RNLI) closed off St Ouen's Bay for 45 minutes after lifeguards spotted a large, grey animal around 40 metres from the water's edge.

Tom Rolls, a lifeguard with the RNLI, said the animal was estimated to be between 10ft and 12ft long, and was spotted at around 10:40am after entering the bay from the west.

'We got the call through from one of the guards at Watersplash, and he basically said that a shark had been spotted in the lineup,' he told the Bailiwick Express.

'Initially, we were like, "that's a joke, you're having us on here".

'But then he was persistent. He said multiple sightings had been seen by members of the public.'

Lifeguards couldn't immediately identify the species, so took the decision to raise the red flag across the whole bay.

Thankfully, the shark soon left the bay heading south, with no beachgoers harmed.

The Royal National Lifeboat Institution (RNLI) closed off St Ouen's Bay for 45 minutes after lifeguards spotted a large, grey animal around 40 metres from the water's edge

Mr Rolls explained that the shark swam directly beneath the board of his colleague, Nick.

'He said it looked definitely more like a shark than anything else,' Mr Rolls said.

'He even said he kind of punched it as he was paddling, so it must have been really close to the surface.

'It was darkish grey, about 10 to 12 feet long, and then it swam away really quickly from under his board.'

The lifeguards asked people to leave the sea – and were met with a few 'surprised looks'.

'Everyone was super calm about it,' Mr Rolls said.

'There were lots of surprised looks, obviously – us included – as it's never happened before.

'It's the first time in history that Jersey has closed the beach for a shark sighting.'

The sighting comes shortly after an endangered shark was stranded at another beach in Jersey, Grève d'Azette

Jesse Heddercott, a surf instructor, was teaching people to surf when the lifeguards told people to get out of the water.

'Nothing like this has ever happened in Jersey before, so it's pretty crazy,' Mr Heddercott, 16, told the BBC.

'We thought it was just a tuna, or something, but then another lifeguard spotted it and it was confirmed to be – probably – a shark.

'They red–flagged the beach and we all had to get out.'

The sighting comes shortly after an endangered shark was stranded at another beach in Jersey, Grève d'Azette.

Marine Mammal Medics attended the scene and found a 600kg, four–metre–long shark stranded in a tidal pool.

Sadly, the shark died shortly after their arrival.

'The animal was identified as a smalltooth sand tiger shark,' British Divers Marine Life Rescue explained.

'It is an elusive and deep–water species, typically found in warm and tropical oceans globally.

'They are also listed as Endangered on the IUCN Red List and are considered naturally uncommon, with minimal research into the species to date.

'The first confirmed records in the UK and Irish waters of this species were only published in 2023, when three individual sharks were recorded in the English Channel and Celtic Sea.

'Their sightings may be linked to warmer than average sea temperatures contributing to a northward shift in the species' range.'