0:15:50 > 0:15:57.
0:16:05 > 0:16:08It's tiny. It's less than an inch high.
0:16:08 > 0:16:11But it started off as a conventional cup.
0:16:11 > 0:16:12I filmed the wreck of the Titanic,
0:16:12 > 0:16:15and just to prove how dangerous it was,
0:16:15 > 0:16:18we put ordinary polystyrene cups into net bags
0:16:18 > 0:16:22outside the front of the submarine. We were at just over 12,800 feet.
0:16:22 > 0:16:25That's about two and a half miles down.
0:16:25 > 0:16:27The water pressure at the bottom of the Atlantic
0:16:27 > 0:16:30would crush that submarine in seconds if it found a weak point.
0:16:30 > 0:16:32The cups just get crushed
0:16:32 > 0:16:34and crushed and crushed, but the water crushes them
0:16:34 > 0:16:36equally from all sides, and it ends up,
0:16:36 > 0:16:38when we come back up a few hours later,
0:16:38 > 0:16:41with lots and lots of miniature cups.
0:16:41 > 0:16:44When I eventually got home,
0:16:44 > 0:16:47all I had to show for it was a handful of these plastic cups.
0:16:47 > 0:16:50I was fascinated by how fascinated people were by them.
0:16:50 > 0:16:52They just couldn't get their minds
0:16:52 > 0:16:56round how a cup could be reduced to this size just by the sea.