Table 1.

Details of passive acoustic recordings from the six regions: Atlantic sector of the Southern Ocean (ASSO), Ecuador, Chile, Brazil, South Africa, Namibia.

Location	Latitude	Longitude	Recording device	Digitalization
ASSO	66° 36.45′ S 66° 30.708′ S 66° 2.01′ S 65° 58.092′ S 63° 59.846′ S 61° 1.071′ S 59° 2.823′ S	27° 7.26′ W 0° 1.512′ E 0° 3.117′ E 12° 15.12′ W 0° 1.842′ E 55° 58.686′ W 0° 5.775′ E	SonoVaults (Develogic GmbH, Hamburg)	5333–9600 Hz
Ecuador	1° 7.3293′ N to 1° 48.5′ S	79° 43.9392′ W to 81° 6.92′ W	H2a-XLR omnidirectional hydrophone DolphinEar/PRO hydrophone	44,100 Hz
Chile	43° 31.889′ S	74° 26.488′ W	Marine Autonomous Recording Units (MARUs)	2000 Hz
Brazil	14° 28.6671′ S to 18° 13.9536′ S	38° 0.5052′ W to 39° 0.6865′ W	Archival bottom-mounted Oceanpods Tascam DR40/HTI 96 min Zoom H4nPro/Aquarium Audio H2a M-Audio Inc. Micro track II	11,000–48,000 Hz
South Africa	34° 9.3396′ S 32° 46.1346′ S	18° 17.7′ E 17° 52.0656′ E	SoundTrap (Ocean Instruments, NZ)	48,000 Hz
Namibia	20° 57.90′ S	5° 58.82′ E	SonoVaults (Develogic GmbH, Hamburg)	5333 Hz

Latitudes and longitudes specified with “to” describe an area where recordings have been conducted at many different locations.