Huge sharks are regularly being spotted in shallow waters, with horrifying reports of attacks near popular beaches around the world.
Just a few days ago, a man bitten by a 7ft beast in the US, leaving his leg "pretty much in shreds".
Elsewhere, two sharks were seen in very shallow water at the beach in Jacksonville, Flordia - within arms reach of dry land, where most people would assume they were safe.
It turns out the sharks in British waters are taking to the shallows too, as Welsh sailor Alex Brace saw a huge shark swimming into the harbour in Tenby.
And now a woman has been bitten by a blue shark while swimming near Penzance, Cornwall - as she had to be rescued by the Coastguard.
What do you think about the shark sightings? Let us know in the comments...
It was reported today that a snorkeler had been bitten by a shark off the coast of Cornwall and she suffered a leg injury.
HM Coastguard confirmed the injury was caused by a suspected shark bite.
A spokesperson said: "HM Coastguard sent Penzance Coastguard Rescue Team to meet a snorkeler who suffered a suspected shark bite.
"The coastguard was notified just before 12.30pm on Thursday (July 28). It is believed the swimmer suffered a leg injury.
"The coastguard team met the casualty at Penzance Harbour to assist with passing them into the care of the ambulance service."
Last month, a man jumped into the ocean to rescue his wife after a shark took a chunk out her leg.
And at the end of last month, a man had his small finger ripped off by a shark as tried to free a hook from the predator over the side of a boat.
And now video footage of two huge sharks hunting in shallow waters of a popular beach has emerged, as people screamed for others to 'get out of the water' as the terrifying animals approached children swimming in the sea.
After the sighting in the US on Saturday, July 30, two sharks were spotted only a few feet away from swimmers in shallow waters – as they were told to evacuate the scene.
As the clip cuts, two shark fins are shown at the edge of the coastline, before someone shouts: "Get out of the water".
The footage is eerily similar to that filmed by Welsh sailor Alex, who was out at sea with a friend for what they thought would be a routine sail around the sea off the tourist hotspot of Pembrokeshire.
At around 8pm, as they were arriving back to dock the boat near the town’s North Beach, they spotted something rather large in very shallow waters.
It was too large to be a catfish and the pair quickly realised exactly what it was - a shark.
Alex said: "We had just come back in and we were in ankle-deep water when we spotted it.
"My friend was standing behind me and we could just see these fins in the water, and a couple of seconds later we realised it was a shark.
"It was near us for a good two or three minutes and then it started heading off towards Saundersfoot.
"The distance between its fins must have been around five or six feet in length, so it must have been about 12 feet long in total. I’ve spoken to a few people and shown them the video and they said it was most likely a basking shark, given the way it was moving."
"That’s the first one I’ve seen."
In the clip filmed in Jacksonville, four beach-goers can be seen standing in the sea, as two men are ushered to shore by a yellow lifeguard float.
Kevin Mackey, lifeguard lieutenant with Jacksonville Beach Ocean Rescue, also responded to the incident and has considered the injury a possible "shark bite".
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It’s reported the man, not named, is still being treated at hospital for his "severe" injuries.
Robert Alexander, a witness at the scene, claims he could see a 7ft shadow of a shark-like figure in the water and subsequently grabbed the injured man, before putting him on his boogie board.
As multiple lifeguards and a nurse rushed to help the injured, he described the man’s shin down to his foot as "pretty much in shreds".
"His foot was dangling as we were carrying him to shore," he said.
"You could tell he had no movement in his foot and I kept telling him to keep eye contact with me."
Further witnesses have claimed that while they didn’t see a shark in the water, they saw the man waving his hand for help – followed by blood filling the sea.
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