She said she waved back at people trying to warn her, believing they were just saying hello.
But she soon became concerned that something wasn't right and got out of the water.
According to news.com.au, she said: "A couple waved to me full of excitement. Out of friendliness, I waved back.
"The people at the beach told me that just 16 feet (4.8m) behind me a shark was swimming."
According to the Metro, she was then shown a picture a witness took of the scene, and said she was so terrified she didn't get back in the water for days.
Some sceptics online have said they believe the picture to be some clever work with Photoshop.
Tiger sharks are commonly found in the waters around Cape Canaveral, along with great white sharks.
Although sharks rarely bite humans, the tiger shark is reported to be responsible for a large percentage of fatal shark bite incidents, and is sometimes regarded as one of the most dangerous shark species.
They often visit shallow reefs, harbours, and canals, creating the potential for encounter with humans. The tiger shark also dwells in river mouths and other runoff-rich water. While the tiger shark is considered to be one of the sharks most dangerous to humans, its bite rate is low. It is second on the list of number of recorded bites on humans, with the great white shark being first.
The tiger shark can grow to over five metres in length. It is found in many tropical and temperate waters, and it is especially common around the central Pacific islands.
Between 1959 and 2000, 4,668 tiger sharks were culled in Hawaii in an effort to protect the tourism industry. These efforts, despite damaging the shark population, were shown to be ineffective in decreasing the number of interactions between humans and tiger sharks.
The tiger shark is considered a near threatened species due to finning and fishing by humans.
10 Easiest Places To Get Eaten By A Shark
10 Easiest Places To Get Eaten By A Shark
New Smyrna Beach in Florida has the dubious honour of having more shark attacks annually than any other beach. The beach is part of Volusia County, which accounts for roughly 37% of Florida’s 663 attacks since 1882.
It is estimated that anyone who has swam there has been within 10ft of a shark, according to National Geographic. However, there have never been any fatalities on New Smyrna.
However, that can't be said for the rest of Florida. Since 1988, there have been 6 fatalities.
The number of fatal, unprovoked shark attacks in South African waters between 1990-2009, is 22, according to the KwaZulu Natal Sharks Board. There have been 136 attacks in total.
In 2012, there were four shark attacks in South Africa, three of them fatal, according to the International Shark Attack File.
Picture: A woman enters the water as workers aboard a boat, right, place a shark exclusion net at Fish Hoek beach, on the outskirts of Cape Town, South Africa, Friday, April 5, 2013.
There have been 207 unprovoked shark attacks in Australia over the last 20 years, and 124 of those occurred in the last 10 years, reports Australian Geographic.
According to The West Australian newspaper, Western Australia has become the deadliest place in the world for shark attacks, after the fourth death in seven months occurred in 2012.
Picture: Shark warning sign on Botany Bay beach. Sydney, Australia.
In the past 20 years Brazil has become an increasingly hazardous place to go swimming.
While the north-east coast might have a stunning coastline and bath-temperature waters, the BBC report that off the shore of Recife are many aggressive sharks, which has made this one of the most dangerous places in the world to swim.
Brazil's sharks appear to be some of the most dangerous in the world. The death rate of 37% (21 of the 56 attacks in 20 years) is much higher than the worldwide shark attack fatality rate, which is currently about 16%, according to the Florida State Museum of Natural History.
Picture: Placard warns about a shark hazard in Boa Viagem beach in Recife, northeastern Brazil on September 11, 2012.
After 14 unprovoked shark attacks were reported in Hawaii in 2013, according to hawaiisharks.com, locals have become increasingly nervous about the risk posed by sharks
From 1828 to December 2013 there have been 128 total unprovoked shark attacks in Hawaii, 10 of which were fatal attacks, according to the International Shark Attack File at the Florida Museum of Natural History.
Picture: Japanese tourists stroll along Waikiki Beach in Hawaii, following a shark siting in 2001, which closed the beach.
California has had 109 confirmed unprovoked shark attacks since 1926, according to the International Shark Attack File, and the state ranks second in the U.S. for shark attack frequency.
There have been 10 fatal attacks, and the last was just two years ago in Santa Barbara in 2012.
Papua New Guinea has had nearly 50 shark attacks (half of them fatal) .
The Guardian report that the country has a disproportionately high number of shark attacks, considering its small population size, because of the country's location, with extensive seas coasts and warm climates.
Picture: Trobriand Island In Trobriand, Papua New Guinea
Since 1837, 71 shark attacks and two fatalities have occurred in South Carolina, according to the International Shark Attack File at the Florida Museum of Natural History.
Of those, 16 attacks are recorded off the beaches of Horry County, where the town of Myrtle Beach is famous as a tourist destination, according to Yahoo.
Luckily, there have been no fatal shark attacks in South Carolina since 1852. But in 2012, South Carolina had a worryingly high level of incidents, when five attacks were reported.
Picture: Myrtle Beach
Despite its size, New Zealand has a relatively high incidence of shark attacks, according to The Encyclopedia of New Zealand.
Since 1852 there have been 44 recorded unprovoked attacks (compared with 39 in the whole of Europe since 1847).
A third of New Zealand attacks occurred between Ōamaru and the Otago Peninsula, probably because sharks are attracted by the high numbers of seals, dolphins and pilot whales in that area.
Picture: A flower tribute at Muriwai Beach near Auckland, New Zealand, after a shark killed Adam Strange in 2013.
Mexico has had 42 shark attacks (22 fatalities) since 1880.
Picture: People walk along Troncones beach in Mexico's Pacific Coast village of Troncones in 2008, after sharks attacked three surfers in the area in less than a month, two fatally.