Two base jumpers stunned onlookers when they plunged off the top of Durdle Door.

The two men ignored warning signs telling people not to climb the arch before parachuting down.

Both were dressed only in shorts and T-shirts although they were wearing safety helmets.

One eyewitness said: "The beach was packed but I don't think anyone could quite believe it when they saw these two guys start climbing up the door carrying their gear.

'"It was obvious what they were going to do but still a bit unbelievable at the time. Everybody stopped to watch.

"The first guy who jumped seemed to struggle with his parachute afterwards, it must have been very heavy in the water.

"I think that is why he swam back out to help the second guy."