Explorers and scientists embark on a first of its kind mission to the bottom of all five oceans. Angela Moore reports.
03:47
01:13
01:54
01:22
01:56
01:22
01:10
01:03
02:26
01:45
01:23
03:08
03:43
01:17
00:31
01:29
03:09
00:59
02:17
02:04
01:22
01:32
00:45
01:08
01:28
01:08
01:21
04:36
01:01
00:57
01:01
00:57
01:53
01:33
01:10
00:56
01:34
01:09
01:07
01:09
03:08
01:13
01:54
01:22
01:17
00:31
01:29
00:59
00:53
01:05
02:46
01:19
01:29
01:38
00:26
01:32
01:47
01:36
01:11
01:29
03:47
01:18
01:39
01:00
01:15
01:27
01:25
01:05
01:58
02:13
06:42
03:08
01:13
04:17
01:11
01:06
01:55
01:24
02:07
01:33
03:03
01:33
01:35
04:32
01:31
01:23
01:36
03:02
01:04
03:05
01:58
01:07
01:10
02:20
00:54
04:12
01:20
01:42
00:52
04:06
01:54
01:35
02:09
00:54
01:27
02:06
02:14
01:50
01:14
02:02
01:25
02:18
01:11
02:13
01:39
01:52
02:03
01:28
01:37
01:36