Imagine crystal clear water, white sand beaches and palm trees blowing in the sea breeze.
In fact, beneath the water's surface lurk some of the most deadly animals in the world.
But it's not just the sea creatures that pose a serious threat.
From Florida to Antarctica, here are the most dangerous beaches in the world.
Heard Island - Antarctica
As you may expect from one of the most southern points in the world, the water surrounding Heard Island is life-threateningly cold.
Why swim there? For the surf, of course. The island, which is actually owned by Australia but sits closest to Antarctica, is a giant volcano, which attracts dozens of keen surfers each year despite the high risks involved.
New Smyrna Beach - Florida, USA
Dubbed by the Guinness World Records as the shark attack capital of the world, the waters of this lethal beach are crowded with bull sharks and spinner sharks.
It also happens to have great surf, which lure death-defying surfers chasing the perfect wave.
Reportedly, of the 112 shark attacks in 2007, 17 of them were on the shores of New Smyrna Beach.
Playa Zipolite - Oaxaca, Mexico
Also known as the 'beach of the dead', the spectacular shores of Mexico's Playa Zipolite have led many beach-goers to their death.
Every part of the picturesque piece of paradise on the surface, the huge waves cause hidden and deadly undercurrents that drag unsuspecting swimmers out to sea.
Cape Tribulation - North Queensland, Australia
While it may look incredibly inviting, this sun-drenched stretch of sea and sand is home to some of the most deadly creatures in the world.
During the summer season, the crystal clear waters are infested with venomous box jellyfish, which sting unwary swimmers and impair their cardiovascular system.
Along the shore isn't overly safe either, with various breeds of snakes inhabiting the area.
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