Table 2.

Detailed information of each sampling gear, including altitude above seafloor, speed range during imagery collection, camera angle, camera system, interval of taking still photos and information regarding the resolution (dots per inch (dpi); Megapixel (mp); Bit rate (kBits sec^-1); Size of video imagery in pixel X pixel). All gears used flat port pressure bottles for video and still cameras with the exception of the ROV Victor 6000, which used dome port pressure bottles.

Gear specifications				Camera specifications				Video specifications
Gear	Altitude	Speed range	Angle	Camera system	Interval	Dots per inch	Megapixel	Frame rate	Bit rate	Pixel resolution	Megapixel
MFT	0.5-5 m	0.3-1 knots	90°/ 45°	Canon Power Shot G9	10 sec	180 dpi	12 mp	25 fps	8,555 kBits sec-1	1440X1080	1.6 mp
STR	0.5-5 m	0.3-1 knots	90°/ 90°	Canon Power Shot G15	10 sec	180 dpi	12 mp	29 fps	15,186 kBits sec-1	1920X1080	2.1 mp
VS	0.5-5 m	0.3-1.5 knots	-/ 90°	-	-	-	-	25 fps	171,355 kBits sec-1	1920X1080	2.1 mp
ROV Kiel 6000	0.5-5 m	0.1-1 knots	10-90°	Canon Power Shot G5	-	180 dpi	5 mp	25 fps	4,128 kBits sec-1	704X576	0.4 mp
ROV Victor 6000	0.5-5 m	0.1-1 knots	10-90°	Video frame grabs	-	72 dpi	2.1 mp	25 fps	768 kBits sec-1	1440X1080	2.1 mp
ROV Ropos	0.5-8 m	0.1-1 knots	10-90°	Nikon D700/ D810	-	300 dpi	12 mp/ 36 mp	30 fps	50,384 kBits sec-1	1920X1080	2.1 mp