BRUV deployments

BRUVs were deployed in all transects visited by the team. They were deployed at 10 meters from surface and letting them film for 1 - 1.5 hours. Initially, we deployed the BRUVs in all 4 stations of each transect. Then after an initial screening of the videos collected, we decided to limit the number of deployments offshore. These were not detecting sharks, possibly because shooting time was too short to reach detectable levels. We could not film for longer because limited by time, batteries and cameras. Hence, we decided to limit deployments only to the reef stations and alternatively on either the 5 and 10 km station.

Notable encounters

March 8, 2017

No sharks detected

March 9, 2017

Reef station

• GP020061
  • (7:40 - 9:18) grey reef sharks. It stays for a few minutes.
• GP040136
  • (2:44 - 2:50) grey reef shark

March 10, 2017

5 Km

• GPPR040132
  • (3:17) dolphinfish.

Reef

• GOPR0137
  • barracuda school (0:57 - 4:14)
  • dogtooth (7:12 - 7:20)
  • same dogtooth? (7:26)
• GP020137
  • (0:27 - 0:44) barracuda school
• GP030137
  • manta (0:08)
• GP020062
  • (1:09) barracuda
  • (16:31 to 17:05) Negaprion acutidens? Initially we thought it was brevirostris (Lemon shark), but the snout and the white rim of the upper caudal, and of the posterior end of the pectoral fin make me think it is the Sicklefin lemon shark.
    
• GP030062
  • (1:16 to 4:14) Same Negaprion acutidens
  • (5:25 to 6:04) Turtle

March 11, 2017

Reef

• GP070143
  • (0:37) 2 Wahoos
• GP030065
  • (9:49) Wahoo

March 12, 2017

Reef

5 km BRUVs were not deployed for lack of time.

Camera 1

From this camera in total 9 files 2 of 19 seconds and 7 of 8:51 minutes

• GOPR0150
  • (4:01 and 8:30) rainbow runners
  • (4:00) rainbow runner
• GP020150
  • (3:13 - 3:36) grey reef shark
  • (3:55 - 5:30) grey reef shark, 2
• GP040150
  • (8:27) grey reef?
• GP050150
  • (5:47 and 7:28) grey reef shark
• GP060150.MP4
  • (0:08 to 0:28) Silky?
  • (1:50 to 2:35) Silky or grey reef?
  • (3:23 to 5:03) Silkies, 4 in one time and nice close shots
    
  • (6:00 to 6:44) Silky
  • (7:50 to 8:50) Silkies.
    In general silkyes and rainbow runners.
• GP070150.MP4
  • (0:43 to 3:42) 3 silkies at once. it seems they are interested in the canister.
  • (6:45-8:25) silky good shot.

Camera 2

• GOPR0066 - no video
  • (16:06-17:35) grey reef shark, it seem interested in the canister but does not dare to approach it.
    
• GP010066
  • (0-0:25) grey reef
  • (1:15-16:48) grey reefs, 3 at once.
• GP020066
  • (0:43 - ) 3 grey reef sharks on and off for the whole time.
• GP030066
  • 1:06-1:18 tiger shark
• GP030066
  • (1:51-1:59) silky sharks
  • (2:19-2:29) grey reef,
  • (4:03-12:06) all sharks together good shots.
• GP030066
  • (16:29-16:40) silky.
• GP060066
  • (6:56-7:08) silky

Fo unambiguous identification we should use the genetic sample.

March 13, 2017

Evening Transect

Camera 1

• GP020152
  • (2:55) rainbow runner?
  • (3:03) at least 6 grey reef sharks circling around to the end of the video.
• GP030152
  • at least 8 grey reefs (same bunch) they are attracted by the bait but they are afraid to get to close. As soon as they arrive close they burst away.
• GP040152
  • same bunch of sharks. It seems they are all females. Getting closer to the bottle.
• GP050152
  • same bunch of sharks. they are around the other camera too. It seems they are closer to the other camera.
• GP060152
  • les numerous in this video.
• GP070152
  • (2:39) one of the grey reef bumped the bottle. 4:27 Another one touched the bottle. The sharks were about to get more confident when we retrieved the rig.

Camera 2

• GP011607
  • (0:39) first shark arrives, grey reef.
  • (5:13-5:28) shark attacked the canister.
  • (6:37-6:57) another bite to the canister.
    
• GP031607
  • (14:19) one of the grey reef seems to have a white tip on the dorsal.