| Cassete name: | sound | Cassette number | 4 | |
| Date: | 13-08-1998 | |||
| Video operator: | Miguel | |||
| Tape Time | tape clock | Observations | ||
| 16:37:04 | 00:00:25,10 | beginning of settlement | ||
| 16:38:54 | 00:01:50,00 | settlement of deeper hydrophone | ||
| 16:39:12 | 00:02:08,04 | settlement of shallower hydrophone | ||
| 16:40:46 | 00:03:42,02 | tying shallower hydrophone | ||
| 16:41:58 | 00:04:54,13 | tying the measuring line | ||
| 16:42:38 | 00:05:34,03 | warm water caming out | ||
| 16:43:59 | 00:06:55,12 | tying the measuring line to deeper hydrophone | ||
| 16:44:38 | 00:07:34,07 | first position of hydrophone (second was 1 m away) | ||
| 16:45:50 | 00:08:46,10 | untying measuring line | ||
| 16:46:40 | 00:09:36,03 | ascent from dive | ||
| 16:47:24 | 00:10:20,22 | images of the sound scheme | ||
| 16:47:34 | 00:10:30,09 | Balistes carolinensis biting the hidrophone | ||
| 16:48:19 | 00:11:15,02 | algae carpet | ||
| 16:48:51 | 00:11:47,06 | passing over vents | ||
| 16:53:36 | 00:16:32,24 | hidrophone line | ||
| 16:53:58 | 00:16:54,12 | diver decompressing | ||
| 16:57:04 | 00:20:00,00 | Victor in apneia | ||
| 16:57:22 | 00:20:18,15 | Marcus Cardew, also diving | ||
| 16:57:38 | 00:20:34,10 | Marcus Cardew, arriving to the surface | ||
| 16:59:54 | 00:22:50,02 | Measuring position 2 of the hidrophone | ||
| 17:02:24 | 00:25:20,13 | Diver decompressing | ||
| 17:02:36 | 00:25:32,00 | Victor in apneia | ||
| 17:03:59 | 00:26:55,11 | Balistes carolinensis biting the camera | ||
| 17:04:17 | 00:27:13,24 | diver decompressing | ||
| 17:04:34 | 00:27:30,02 | Overview of the sampling site | ||
| 17:05:03 | 00:27:59,01 | Divers decompressing | ||
| 17:14:41 | 00:37:37,20 | Getting out of water | ||
| 17:15:39 | 00:38:35,13 | The End | ||