"I had no idea about the signs of skin cancer ... but they are one of the most dangerous forms of skin cancer, according to the British Skin Foundation. They can develop from existing moles ...

Could you spot the difference between a healthy mole and a dangerous one? As many of us prepare to strip off and bare our bodies to the summer sun, what better time to check those moles.

"I had no idea about the signs of skin cancer ... but they are one of the most dangerous forms of skin cancer, according to the British Skin Foundation. They can develop from existing moles ...