You have 20/20 vision if you can spot the deadly marine predator lurking underwater in this drone-shot optical illusion
YOU have 20/20 vision if you can spot the deadly marine predator lurking underwater in this drone-shot optical illusion.
The white shark was pictured blending into the crystal-clear ocean off Cape Cod, Massachusetts.
Experts from the Atlantic White Shark Conservancy said that the camera-shy shark was using "countershading" to hide from predators and prey.
Countershading is a type of natural camouflage where a shark's top is darker than its tummy - making it hard for other fish to see how close or far away the sharp-toothed swimmer is.
The AWSC said: "Here is a screenshot from drone footage that the research team captured last field season. Can you spot the white shark?"
If you squint, you might be able to make out a white smudge in the drone shot about three-quarters of the way down right in the middle of the picture - this is the shark.
White sharks can be seen off Cape Cod as early as April each year, although peak season is between August and October.
Last August more than 30 great white sharks were seen off the coast in just two days, forcing beaches to close.
A huge great white up to 14ft long was among the sharks spotted by terrified locals.
Shark attacks off Cape Cod are rare, with even great whites preferring seals to people.
But locals still make a modest fortune each year selling striped shark-repelling socks to impressionable tourists wishing to distinguish themselves from seals.
There is even an app called Sharktivity which allows visitors to stay informed of the time and place of the latest shark sightings - though as the AWSC's picture proves, most sharks swim unseen.
A family of barn owls is hidden in this tree - you could have the eyes of a hawk if you can spot them.
And you probably have perfect vision if you can spot the hidden leopard on this mountain.
Hardest of all, you have the eyes of a marksman if you can spot the two hidden snipers aiming right at you in this mind-boggling picture.