BLUE sharks are known to prowl the Mediterranean sea, but they can also be found in British waters.
So do we need to fear these creatures from the deep or have our jaws just got wagging over nothing?
Do blue sharks attack humans?
Blue sharks have been known to attack humans but they could hardly be described as frequent "man-eaters".
The predators, which have been known to reach up to 12 feet in length, have been implicated in precious few attacks on humans.
Since the year 1580 blue sharks have been thought to have been involved in just 13 biting incidents with only four of those being fatal.
And according to the University of Florida, there are only 12 unprovoked attacks on record.
How dangerous are blue sharks?
Blue sharks have been known to go for humans and for boats out in sea and are therefore classified as a "dangerous" species.
There are also reports of attacks following air or sea disasters with accounts suggesting shipwrecked sailors have been maimed by them.
Blue sharks have been reported to circle swimmers or divers for 15 minutes or more before going in for a bite.
The beasts are described as "not overly aggressive" but should be approached with caution, as they may attempt a "test bite".
What happened to the migrants in the Mediterranean?
A group of migrants who fell from overcrowded boats in the Mediterranean were attacked by sharks in 2017, it was claimed.
The Libyan Navy said 31 people were dead and another 40 missing when it arrived at the scene of two upturned boats that were headed for Europe.
Many of the bodies had bite marks from deadly blue sharks with some of the killer fish spotted nearby, the navy said on its Facebook page.
Three children and 18 women were among the dead.
It described how terrified survivors were found scurrying to get on top of the upturned hulls away from the sharks.
The post read: "We found dozens of bodies floating in the water and two small boats with hundreds of people crowded on board and others holding on or trying to climb aboard to escape from the sharks."
What happened in Majorca?
The blue shark, thought to have been harpooned, came close to the shore at three popular Majorcan beaches before it was dragged from the water by lifeguards.
The large fish with the tell-tale fin was spotted near swimmers in Illetas close to Magaluf just after midday the previous day.
It was later pictured on the beach after it was caught by lifeguards and taken to shore.
Local reports said it had a serious head injury, caused by a harpoon, which was why it had approached the packed beaches.
Tourists and locals could be seen following behind, taking pictures on their mobile phones and selfies of themselves by the injured shark, before it was put into a Palma Aquarium emergency rescue vehicle.
The shark was later put down after suffering from “irreversible damage”.
Are blue sharks found in UK waters?
British waters are home to more than 40 different species of shark, including the second largest fish in the world, the basking shark.
The Shark Trust describes blue sharks as "seasonal visitors" to UK waters.
During the summer the beasts can appear in the seas around Britain as part of their highly migratory lifestyle.
Brits don't need to fear going back into the water though as there has not been a documented unprovoked shark attack in British waters since 1847.