Actor Russell Crowe couldn't help but laugh after continually finding small stones stuck in the nooks and crannies of his body after filming a nude scene on an Icelandic beach for his new Biblical epic Noah.

The Gladiator star portrays the religious hero in director Darren Aronofsky's new movie, and one scene required him to lay out on a pebble-covered beach completely naked.

But the hours spent filming that segment left Crowe with unwanted mementoes in the most awkward places.

He explains, "That was pretty much all day lying around naked and they have these little stones, right, it's kind of as the lava meets the sea and they get smoothed off and what have you... these stones get really round.

"It was like four days (after shooting the scene), you're still getting dressed in the morning and these little stones are falling out and it's like, 'Where has that been for four days?'"