Echosounder data were collected on a multidisciplinary research voyage conducted from the RV Tangaroa, operated by New Zealand’s National Institute of Water and Atmospheric Research Limited (NIWA). The voyage lasted 42 days, departing from Wellington, New Zealand on January 29th , 2015 and returning to the same port on 11th March 2015. Active acoustic data were obtained continuously using a calibrated scientific echosounder (Simrad EK60, Horten, Norway). The echosounder operated at 38 and 120 kHz for the duration of the voyage with a pulse duration of 1.024 ms, a pulse repetition rate of one ping per second and a 7° beam width. The echosounder data here are a subset of that collected throughout the voyage and include only data from south of 65°S. This subset of data focuses on research questions pertaining to Antarctic blue whales and krill.

The ‘Logger’ data entry system was developed by the International Fund for Animal Welfare (IFAW) and is a flexible system to record information during a voyage. All events occurring during daylight operations such as sightings, biopsy attempts and sonobuoy deployments were recorded in a customized data entry program Logger along with weather and effort data. The logger access database contains all data collected throughout theNZ/Aus Antarctic Ecosystems Voyage 2015 related to: Biopsy events (date/time in UTC, success, sample number, reaction, attempts, dart recovery, notes) Comments - time stamped (UTC) with GPS index providing additional detail Observer effort (effort status, event, number of observers and locations, ship guide and data logger) Environmental observations (sightability, sea state, swell, weather, cloud cover, visibility, intensity, glare, ice, sea surface temperature) GPS data - time indexed NMEA feed, also containing heading and ship speed Lookup - table containing topic codes describing the codes that appear in all other tables Cetacean sightings and resightings (date/time in UTC), sighting number, sighting platform, estimate distance, binocular reticles, angle, species, sighting cue, heading, estimate of number of individuals, observer of sighting, behaviour, pod compaction, comments) Sonobuoy deployments (date/time in UTC, sonobuoy number, notes)

This dataset contains the underway data collected during the Tangaroa Voyage 5.1 1999-2000. This voyage carried out marine science studies off the Antarctic coast between the Dibble ice tongue and Ninnis glacier, departing from and returning to Wellington, NZ. Underway data were received from NIWA (PO Box 14-901, Kilburnie, Wellington, New Zealand) and can be accessed via the Australian Antarctic Division Data Centre web page (or via the Related URL section). For further information, see the Marine Science Support Data Quality Report at the Related URL section.

Sampling sites with a list of activities at each site for the Tangaroa cruise - March to April 2004. Tangaroa Tube Label our use Sample#our use Date(UTC) Time(UTC)Shorthand entry code - ignore Time(UTC)Formatted Use this Long Degdegrees Long Minminutes Long Decdecimaldegrees Lat Degdegrees Lat Minminutes Lat Decdecimaldegrees Local time (dec hrs)actual solar local time (decimal hours) calc from longitude DOES NOT EQUAL TIME ZONE Sea Temp Ice present/absent Lugol's#microscope sample number for phytoplankton ID (Our use only) HPLC Volvolume filtered for HPLC pigment analysis (Our use only) Cocco Volvolume filtered for coccolithophorid counts (Our use only) Cocco tray No.(Our use only) Location:DCM: Deep chlorophyll maximum Thermo: Thermocline

This dataset contains the underway data collected during Tangaroa Voyage VY1 - AWE - Australia-New Zealand Antarctic Whale Expedition - 2009/10 Track and Underway Data Voyage Objectives: Antarctic Whale Expedition (AWE). Voyage Leader: Anthony Hull Deputy Voyage Leader: Sarah Robinson

A spreadsheet detailing the filenames of the best left and/or right photos of blue whales photographed and individually identified during the New Zealand Australia Antarctic Ecosystems Voyage 2015. See http://www.marinemammals.gov.au/sorp/antarctic-blue-whale-project for further detail regarding the Antarctic blue whale voyage.

Satellite derived tracks of humpback whales tagged on their Antarctic feeding grounds. Data can be found here: https://data.aad.gov.au/aadc/argos/display_campaign.cfm?campaign_id=83 Satellite tags were deployed on adult humpback whales with a modified version of the Air Rocket Transmitter System (ARTS, Restech) and a purpose-designed projectile carrier at a pressure of 7.5 – 10 bar. A custom-designed, 80mm anchor section is attached to a stainless steel cylindrical housing containing a location-only transmitter (SPOT-5 by Wildlife Computers, Redmond, Washington, USA and Kiwisat 202 Cricket by Sirtrack, Havelock North, New Zealand). This superseded anchor design resulted in the anchor section disarticulating upon deployment in order to achieve improved tag retention times while minimising impact. The tags were sterilised with ethylene oxide prior to deployment and implanted up to 290mm into the skin, blubber, interfacial layers and outer muscle mass of the whale. Tags were programmed to transmit to the Argos satellite system at various duty cycles and repetition rates for a maximum of 720 transmissions per day. These transmissions are relayed to processing centres which calculate the transmitter’s location by measuring the Doppler Effect on transmission frequency.

This is the CTD and Niskin bottle data set from the RV Tangaroa cruise tan0704, 7th Mar 2007 to 29th Mar 2007, along the Macquarie Ridge. This was the deployment cruise for the Macquarie Ridge mooring array. Dissolved oxygen data have been removed from this data set (oxygen bottle data never analysed). There were a total of 75 CTD casts on this cruise.

This dataset contains acoustic recordings from Directional Frequency Analysis and Recording (DIFAR) sonobuoys that were deployed throughout the 2015 NZ-Aus Antarctic Ecosystems Voyage. During the 42 day voyage 310 sonobuoys were deployed yielding 520 hours of acoustic recordings. Two models of sonobuoys were used during the voyage: 2 were AN/SSQ-53F (Ultra Electronics: SonobuoyTechSystems, USA) and 308 were re-lifed AN/SSQ-955-HIDAR (deployed in DIFAR compatibility mode; Ultra Electronics Sonar Systems, UK). A total team of four dedicated acousticians monitored round-the-clock for blue whales and in all weather conditions. After deployment, sonobuoys sent acoustic and directional data to the ship via a VHF radio transmitter. Radio signals from the sonobuoy were received using an omnidirectional VHF antenna (PCTel Inc. MFB1443; 3 dB gain tuned to 144 MHz centre frequency) and pre-amplifier (Minicircuits Inc. ZX60-33LN-S+) mounted on the mast of the ship at a height of 21 m. The preamplifier was connected to a power splitter via LMR400 cable and signals were received with two WiNRaDiO G39WSBe sonobuoy receivers. The radio signal from sonobuoys was adequate for monitoring and localization out to a typical range of 12-15 nmi. Received signals were digitised via the instrument inputs of a Fireface UFX sound board (RME Fireface; RME Inc.) with a gain set to 20 dB (8.396 V peak-peak voltage limits). Digitised signals were recorded on a personal computer as two-channel 48 kHz 24-bit WAV audio files using the software program PAMGuard (Gillespie et al. 2008). Directional calibration The magnetic compass in each sonobuoy was calibrated/validated upon deployment as described by Miller et al. (2015, 2016). Calibration procedure involved measuring the mean bearing error and standard deviation of errors between the GPS-derived bearing from the sonobuoy to the ship and the magnetic bearing to the ship noise detected by the sonobuoy. 15-20 bearings were used for each calibration as the ship steamed directly away from the deployment location. Intensity calibration Obtaining calibrated intensity measurements from sonobuoys not only requires knowledge of the sensitivity of the hydrophone, but also the calibration parameters of the radio transmitter and radio receiver. Throughout the voyage, a hydrophone sensitivity of -122 dB re 1 V/micro Pa was applied to recordings via the Hydrophone Array Manager in PAMGuard. This value is defined in the DIFAR specification as the reference intensity at 100 Hz that will generate a frequency deviation of 25 kHz (Maranda 2001), thus the specification combines the hydrophone sensitivity and transmitter calibration. In line with manufacturers specifications, the WiNRADiO G39 WSB had a measured voltage response of 1 V-peak–peak (approximately -3 dB) at 25 kHz frequency deviation (Miller et al. 2014), and this was subtracted from the hydrophone sensitivity to yield an total combined factor of 125 dB re 1 V/µPa. The gain of the instrument input on the Fireface UFX was set to 20 dB, yielding a maximum voltage input voltage range of 8.36 V peak–peak. These calibration settings, along with the shaped filter response provided by Greene et al. (2004) make it possible to obtain calibrated pressure amplitude from the recorded WAV audio files. Sonobuoy deployment metadata The PAMGuard DIFAR Module (Miller et al. 2016) was used to record the sonobuoy deployment metadata such as location, sonobuoy deployment number, and audio channel in the HydrophoneStreamers table of the PAMGuard database (PamguardBlueWhale-2015-02-03.mdb). A written sonobuoy deployment log (Sonobuoy deployment logbook - 2015 Tangaroa.pdf) was also kept during the voyage, and this includes additional notes and additional information not included in the PAMGuard Database such as sonobuoy type, and sonobuoy end-time. Real-time monitoring and analysis (Acoustic event log) Aural and visual monitoring of audio and spectrograms from each sonobuoy was conducted for each sonobuoy deployment. Two different spectrograms were typically viewed, one for low-frequency sounds with the following parameters: 250 Hz sample rate; 256 sample FFT; 32 sample advance between time slices. The other spectrogram was used to view mid-frequency sounds with the following parameters: 8000 Hz sample rate; 1024 sample FFT; 128 sample advance between time slices. Monitoring was typically conducted in real-time as data were being acquired, and the intensity scale of the spectrogram was adjusted by the operator to suit the ambient noise conditions. Detections from marine mammals, ice, and other sources and were detected and classified manually, and their time and frequency bounds were marked on the PAMGuard spectrogram. The PAMGuard DIFAR module (Miller et al. 2016) was then used to measure the direction of arrival and intensity of suitable calls from a variety of species such as tonal, frequency-modulated, and pulsed calls of baleen whales; and also some whistles from toothed whales. Echolocation clicks from sperm whales and any other short broadband sounds were noted in the PAMGuard UserInput (free form notes stored in the PAMGuard Microsoft Access database), but were not able to be localised with the DIFAR module due to limitations inherent in directional sensors in the sonobuoy. Each detection, bearing, and intensity measurement were saved within PAMGuard binaryStorage files in addition to the DIFAR_Localisation table of the PAMGuard database. In addition to PAMGuard binary files and audio files, the PAMGuard settings and metadata were saved inside the PAMGuard Sqlite database. Parameters for monitoring, recording, directional analysis, and other PAMGuard modules were stored within the PAMGuard database and as stand-alone Pamguard Settings Files (PSF). In addition to recording of Antarctic blue whale song, New Zealand type blue whale song, and blue whale 'D-call' vocalisations, these recordings also contain vocalisations from fin whales, humpback whales, killer whales, sperm whales, as well as low frequency sounds from Antarctic sea ice. Whale tracking log (Written Whale Acoustic Tracking Log - Tangaroa 2015.pdf) During the 2015 Voyage Acousticians also created a written summary of the event log at irregular intervals, typically between 30-60 minutes and this summary comprises the Whale Tracking Log. The acoustician on-duty recorded the average bearings or locations of each calling whale/group in the written Whale Tracking Log when the situation regarding the relative position of tracked whale groups was deemed to have changed. Entries in the written Sonobuoy Tracking Log (on the bench in the acoustics workstation) included the location of different whale groups and total number of different whale groups heard during that time interval. References Greene, C.R.J. et al., 2004. Directional frequency and recording ( DIFAR ) sensors in seafloor recorders to locate calling bowhead whales during their fall migration. Journal of the Acoustical Society of America, 116(2), pp.799–813. Maranda, B.H., 2001. Calibration Factors for DIFAR Processing, Miller, B.S. et al., 2014. Accuracy and precision of DIFAR localisation systems: Calibrations and comparative measurements from three SORP voyages. Submitted to the Scientific Committee 65b of the International Whaling Commission, Bled, Slovenia. SC/65b/SH08, p.14. Miller, B.S. et al., 2016. Software for real-time localization of baleen whale calls using directional sonobuoys: A case study on Antarctic blue whales. The Journal of the Acoustical Society of America, 139(3), p.EL83-EL89. Available at: http://scitation.aip.org/content/asa/journal/jasa/139/3/10.1121/1.4943627. Miller, B.S. et al., 2015. Validating the reliability of passive acoustic localisation: a novel method for encountering rare and remote Antarctic blue whales. Endangered Species Research, 26(3), pp.257–269. Available at: http://www.int-res.com/abstracts/esr/v26/n3/p257-269/. Raw Audio Files: DS05_Sonobuoy_audio Sonobuoy deployment log: DS07_Sonobuoy_deployment_log Acoustic event log: DS08_Acoustic_event_log Whale tracking log: DS09_Whale_tracking_log

This is the CTD data set from RV Tangaroa cruise tan0803, 26th March to 26th April 2008, along the Macquarie Ridge. This was the recovery cruise for the Macquarie Ridge mooring array. The primary aims of the oceanographic program were: 1. recovery of a New Zealand/Australia collaborative mooring array spanning two gaps in the Macquarie Ridge north of Macquarie Island, and 2. occupation of a CTD transect running south from New Zealand to 60o S along the Macquarie Ridge. Eight of the nine moorings were successfully recovered. The mooring at site number 3 (NIWA gear) was unrecoverable, with acoustic release communication indicating only the bottom portion of the mooring remaining and lying flat on the ocean floor. Complete details of the mooring work are included in a separate mooring recovery report. Mooring instruments were downloaded on the ship, with a very high percentage of successful data recording. Ship maneouvering and deck operations all went well throughout the recoveries. Shiptime at the mooring locations was well spent, with daylight hours dedicated to mooring recovery, and night time used for nearby CTD, swath mapping, coring and sea mount activities, and for unspooling of mooring line. The additional container space created on the top deck portside (above the trawldeck) proved extremely valuable for stowage of mooring gear. 58 CTD's were completed during the cruise, including 54 along the main transect, and 4 at coring locations (part of the geology program). Main transect CTD's included 2 across the northern mooring group, and 3 across the southern mooring group. Most casts were to within 25 metres of the bottom. Instrument problems resulted in incomplete casts at the following locations: CTD 9, CTD 11 and CTD 27. CTD 46 was skipped due to bad weather, while further instrument problems prevented a cast at the southernmost site (CTD 50). Niskin bottles were sampled at each station for dissolved oxygen and salinity, with a subset of stations selected for 18O sampling. Some stations were additionally sampled for DIC, alkalinity, 13C, silicate, and U/Th, as part of the geology program. Note that dissolved oxygen data have been removed from this data set, as oxygen bottle samples were never analysed.