The next time you go in the water there could well be a shark close by, according to one ocean expert.
Marine conservation scientist David Shiffman, however, said that even if it can see you, you are unlikely to spot it.
He commented: "Just because you don't see a shark doesn't mean the shark doesn't see you.
"Most of the time, they leave you alone..."
And with Discovery Channel's 34th Shark Week well underway, Shiffman has been critical of the annual TV event in the past.
He described the idea of it as "great" but added: "It's measurably … the largest increase in Americans paying attention to any ocean science or conservation issue of the whole year.
"And they fill it with just nonsense. Sometimes it's harmful nonsense. Sometimes it's just useless nonsense.”
Despite a recent spate of shark attacks this summer that made the headlines, including two swimmers killed in separate incidents 600m apart in Egypt, Shiffman noted that in reality there is little to be concerned about.
He said: "If you go in the ocean and you see a shark and it's just minding his own business, you do not need to be worried.
"Sharks tend to just bump into people in the water and sometimes do not even physically touch them," reports The Daily Star.
Shiffman said there is more chance of being killed falling from a cliff than by a shark and blamed the popularity of the 1975 Jaws film as being somewhat responsible for their reputation as man-eaters.
The terrifying theme tune in particular has influenced swimmers' mindsets when entering the sea.
Film music historian John Burlingame said composer John Williams knew what he was doing in creating the iconic score: "He wrote this fairly simple orchestral idea and then made it work over the course of two hours.
“So much so that now you can just play that music and people run screaming from the beach.”
However, it is sharks that should be more worried about humans than the other way around.
Approximately 100 million sharks are killed every year, according to Shiffman, yet they are vital for keeping a healthy ecosystem in the ocean.
Many of the deaths are caused by unsustainable fishing practices, including intentionally catching them or accidently when fishing for other sea life.
