Horrifying drone footage has captured a shark stalking two blissfully unaware swimmers off a beach in Florida.
The duo even waved at the drone, and were oblivious to the reality that a shark was encircling them.
The footage was filmed last Thursday by brothers Robert and Blake Russ, as they traced the shark near the pier.
They tracked the shark along the beach but weren't close enough to tell the swimmers, reports Fox 35 Orlando.
Blake said he saw the shark "going right towards the people".
He continued: "So then that's when all the family started gathering around the screen on the remote.
"We were just amazed that people were just bouncing around on their floaties."
According to Robert, they were becoming "pretty excited and nervous" about swimmers getting attacked.
The shark was seen swimming around a family of three, two surfers and a woman in the water.
At times the creature was just a few feet away from their potential prey - but it then swam away.
The video comes days after swimmers in Florida were left in a panic when not one but two sharks were spotted lurking close to the shore at the same time.
Beachgoers relaxing on Neptune Beach in Jacksonville were surprised to see a pair of grey fins poking out of the water's surface, which was only knee-deep high.
The close call, which was caught on camera on Saturday, July 30, resulted in someone screaming: "Get out the water!" as people can be seen suddenly scrambling to leave the ocean as quickly as possible.
No one was injured in the incident, but it left swimmers wary to re-enter the waters any time soon.
The sightings follow an increase in the number of sharks spotted along the east coast of the US, MailOnline reports.
A beach in Maine was reportedly temporarily closed last week after a great white shark was seen in the area.
Earlier on the same day as the Florida incident, a man had his leg "severely" injured in a suspected shark attack two miles away on Jacksonville Beach.
Florida is known for its regularity of shark-related occurrences. New Smyrna Beach in particular is labelled as the 'shark attack capital of the world'.
Last year, 17 attacks were reported in the area, including a 16-year-old surfer who needed nine stitches on his arm.
People are believed to be 10 times more at risk from sharks there than anywhere else in the world.
