{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:03:01Z","timestamp":1787022181580,"version":"build-2736575974"},"reference-count":72,"publisher":"Public Library of Science (PLoS)","issue":"12","license":[{"start":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T00:00:00Z","timestamp":1765411200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Dalio Philanthropies and Ocean X"},{"name":"Sea Grape Foundation"},{"name":"Virgin Unite, Rosamund Zander\/Hansjorg Wyss, Chris Anderson\/Jacqueline Novogratz through The Audacious Project: a collaborative funding initiative housed at TED"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:p>Over the past decade, bioacoustics associated with diverse marine life has become the focus of increasing research. While fixed acoustic devices play important roles in characterizing localized soundscapes, animal-worn devices that record audio alongside physiological metrics provide richer portals to understanding cetacean communication and characterizing sounds in their environment. To facilitate scaling the collection of such multimodal datasets for deep learning applications and to encourage rapid prototyping for new recording capabilities, we present an open-source non-invasive bio-logger that can be deployed on marine animals to record high-quality audio synchronized with an extensible suite of behavioral and environmental sensors. The current implementation is tailored to investigating sperm whale communication and biology. It features four suction cups, three high-bandwidth synchronized hydrophones for audio analysis including directionality, GPS logging and transmission, and sensors for pressure, motion, orientation, temperature, and light. Its hardware and software are both open-source, with designs, fabrication details, and code available online. Lab-based experiments characterize and validate performance including shear adhesion forces, withstanding pressures equivalent to 560\u2009m depths, battery life up to 16.8\u2009hours, audio sensitivity of \u2013205\u2009dB re FS\/\u03bcPa with a 96\u2009dB dynamic range, multi-threaded data acquisition, drone-based deployments, and GPS-based recoveries. Field experiments record sperm whale vocalizations and behaviors spanning 10 deployments, 44\u2009hours of recording, 20\u2009dives, and up to 967\u2009m depths. Altogether, this platform aims to advance the understanding of marine animal biology and communication within the rapidly evolving and intersecting areas of robotics, bioacoustics, and machine learning.<\/jats:p>","DOI":"10.1371\/journal.pone.0337093","type":"journal-article","created":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T18:44:36Z","timestamp":1765478676000},"page":"e0337093","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":3,"title":["An open-source bio-logger for studying cetacean behavior and communication"],"prefix":"10.1371","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1286-7034","authenticated-orcid":true,"given":"Daniel 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[cited 2025 Nov 1]. https:\/\/www.projectceti.org\/research\/"},{"key":"pone.0337093.ref013","unstructured":"CETI. Project CETI. 2024. https:\/\/www.projectceti.org\/"},{"key":"pone.0337093.ref014","doi-asserted-by":"crossref","first-page":"291","DOI":"10.3354\/meps258291","article-title":"Sperm whale diving behavior monitored using a suction-cup-attached TDR tag","volume":"258","author":"M Amano","year":"2003","journal-title":"Mar Ecol Prog Ser."},{"key":"pone.0337093.ref015","doi-asserted-by":"crossref","first-page":"3362","DOI":"10.1121\/1.2933957","article-title":"Dynamic tracking of free-swimming whale groups using digital acoustic recording tags","volume":"123","author":"C White","year":"2008","journal-title":"The Journal of the Acoustical Society of America."},{"issue":"1","key":"pone.0337093.ref016","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1109\/JOE.2002.808212","article-title":"A digital acoustic recording tag for measuring the response of wild marine mammals to sound","volume":"28","author":"MP Johnson","year":"2003","journal-title":"IEEE J Oceanic Eng."},{"key":"pone.0337093.ref017","unstructured":"CATS tag. https:\/\/cats.is\/. 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One."},{"issue":"3","key":"pone.0337093.ref024","doi-asserted-by":"crossref","first-page":"785","DOI":"10.1111\/mms.12408","article-title":"A day in the life of a dolphin: using bio-logging tags for improved animal health and well-being","volume":"33","author":"K Alex Shorter","year":"2017","journal-title":"Marine Mammal Science."},{"issue":"8","key":"pone.0337093.ref025","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0265849","article-title":"Biologging of emperor penguins-attachment techniques and associated deployment performance","volume":"17","author":"A Houstin","year":"2022","journal-title":"PLoS One."},{"issue":"1","key":"pone.0337093.ref026","article-title":"The scale of the whale: using video-tag data to evaluate sea-surface ice concentration from the perspective of individual Antarctic minke whales","volume":"8","author":"JMJ Linsky","year":"2020","journal-title":"Anim Biotelemetry."},{"issue":"1","key":"pone.0337093.ref027","doi-asserted-by":"crossref","DOI":"10.1186\/s40317-023-00321-6","article-title":"Correction: The advantages and challenges of non-invasive towed PILOT tags for free-ranging deep-diving megafauna","volume":"11","author":"J Fontes","year":"2023","journal-title":"Anim Biotelemetry."},{"issue":"1550","key":"pone.0337093.ref028","doi-asserted-by":"crossref","first-page":"2177","DOI":"10.1098\/rstb.2010.0081","article-title":"Wildlife tracking data management: a new vision","volume":"365","author":"F Urbano","year":"2010","journal-title":"Philos Trans R Soc Lond B Biol Sci."},{"issue":"10","key":"pone.0337093.ref029","doi-asserted-by":"crossref","DOI":"10.1007\/s00265-018-2570-y","article-title":"First-year sperm whale calves echolocate and perform long, deep dives","volume":"72","author":"P T\u00f8nnesen","year":"2018","journal-title":"Behav Ecol Sociobiol."},{"key":"pone.0337093.ref030","first-page":"4119","article-title":"Characterizing Chilean blue whale vocalizations with DTAGs: a test of using tag accelerometers for caller identification","volume":"220","author":"MR Saddler","year":"2017","journal-title":"J Exp Biol."},{"key":"pone.0337093.ref031","article-title":"Dive heart rate in harbour porpoises is influenced by exercise and expectations","volume":"221","author":"BI McDonald","year":"2018","journal-title":"J Exp Biol."},{"issue":"3","key":"pone.0337093.ref032","doi-asserted-by":"crossref","first-page":"1921","DOI":"10.1121\/1.4978438","article-title":"Bowhead whale localization using time-difference-of-arrival data from asynchronous recorders","volume":"141","author":"GA Warner","year":"2017","journal-title":"J Acoust Soc Am."},{"key":"pone.0337093.ref033","doi-asserted-by":"crossref","first-page":"110480","DOI":"10.1016\/j.comnet.2024.110480","article-title":"Detection and characterization of ship underwater radiated narrowband noise","volume":"248","author":"T Alexandri","year":"2024","journal-title":"Computer Networks."},{"issue":"6408","key":"pone.0337093.ref034","doi-asserted-by":"crossref","first-page":"1208","DOI":"10.1126\/science.aav2403","article-title":"Pollution threatens toothed whales","volume":"361","author":"C Sonne","year":"2018","journal-title":"Science."},{"issue":"4","key":"pone.0337093.ref035","doi-asserted-by":"crossref","first-page":"1263","DOI":"10.1111\/gcb.14573","article-title":"Future recovery of baleen whales is imperiled by climate change","volume":"25","author":"VJD Tulloch","year":"2019","journal-title":"Glob Chang Biol."},{"key":"pone.0337093.ref036","article-title":"Evidence of social learning across symbolic cultural barriers in sperm whales","volume":"13","author":"A Leitao","year":"2024","journal-title":"eLife."},{"issue":"1","key":"pone.0337093.ref037","doi-asserted-by":"crossref","first-page":"3617","DOI":"10.1038\/s41467-024-47221-8","article-title":"Contextual and combinatorial structure in sperm whale vocalisations","volume":"15","author":"P Sharma","year":"2024","journal-title":"Nat Commun."},{"key":"pone.0337093.ref038","article-title":"A theory of unsupervised translation motivated by understanding animal communication","volume":"36","author":"S Goldwasser","year":"2024","journal-title":"Advances in Neural Information Processing Systems."},{"key":"pone.0337093.ref039","article-title":"Approaching an unknown communication system by latent space exploration and causal inference","author":"G Begu\u0161","year":"2023","journal-title":"arXiv preprint"},{"key":"pone.0337093.ref040","article-title":"Language-like efficiency in whale communication","author":"M Youngblood","year":"2024","journal-title":"PsyArXiv preprint"},{"key":"pone.0337093.ref041","doi-asserted-by":"crossref","first-page":"1899","DOI":"10.1242\/jeb.205.13.1899","article-title":"Sperm whale sound production studied with ultrasound time\/depth-recording tags","volume":"205","author":"PT Madsen","year":"2002","journal-title":"J Exp Biol."},{"issue":"3","key":"pone.0337093.ref042","doi-asserted-by":"crossref","first-page":"1279","DOI":"10.1121\/1.413465","article-title":"Time and frequency domain characteristics of sperm whale clicks","volume":"98","author":"JC Goold","year":"1995","journal-title":"J Acoust Soc Am."},{"issue":"2","key":"pone.0337093.ref043","doi-asserted-by":"crossref","first-page":"1143","DOI":"10.1121\/1.1586258","article-title":"The monopulsed nature of sperm whale clicks","volume":"114","author":"B M\u00f8hl","year":"2003","journal-title":"J Acoust Soc Am."},{"issue":"3","key":"pone.0337093.ref044","doi-asserted-by":"crossref","first-page":"814","DOI":"10.1111\/j.1365-2656.2006.01101.x","article-title":"Deep-diving foraging behaviour of sperm whales (Physeter macrocephalus)","volume":"75","author":"SL Watwood","year":"2006","journal-title":"J Anim Ecol."},{"issue":"1","key":"pone.0337093.ref045","article-title":"Stereotypical resting behavior of the sperm whale","volume":"18","author":"PJO Miller","year":"2008","journal-title":"Curr Biol."},{"issue":"1","key":"pone.0337093.ref046","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1016\/j.jembe.2007.10.010","article-title":"Shallow food for deep divers: dynamic foraging behavior of male sperm whales in a high latitude habitat","volume":"354","author":"V Teloni","year":"2008","journal-title":"Journal of Experimental Marine Biology and Ecology."},{"key":"pone.0337093.ref047","unstructured":"Systems ES. Guide to syntactic machining. [cited 2024 June 22]. https:\/\/ess.globecomposite.com\/technical-guides\/"},{"key":"pone.0337093.ref048","unstructured":"Systems ES. Syntactic foam case studies. [cited 2024 June 22]. https:\/\/ess.globecomposite.com\/case-studies\/"},{"issue":"1","key":"pone.0337093.ref049","doi-asserted-by":"crossref","first-page":"27","DOI":"10.47536\/jcrm.v20i1.237","article-title":"Best practice guidelines for cetacean tagging","volume":"20","author":"RD Andrews","year":"2019","journal-title":"J Cetacean Res Manage."},{"issue":"1","key":"pone.0337093.ref050","doi-asserted-by":"crossref","first-page":"2100605","DOI":"10.1002\/admt.202100605","article-title":"Injection molding of soft robots","volume":"7","author":"MA Bell","year":"2022","journal-title":"Advanced Materials Technologies."},{"issue":"3","key":"pone.0337093.ref051","doi-asserted-by":"crossref","DOI":"10.1088\/1748-3190\/ad2c21","article-title":"Stickiness in shear: stiffness, shape, and sealing in bioinspired suction cups affect shear performance on diverse surfaces","volume":"19","author":"AM Hernandez","year":"2024","journal-title":"Bioinspir Biomim."},{"key":"pone.0337093.ref052","unstructured":"KELLER Druckmesstechnik AG. Data sheet: piezoresistive OEM pressure transmitters with I2C interface and embedded signal conditioning, series 4LD...9LD. 2021."},{"issue":"4","key":"pone.0337093.ref053","doi-asserted-by":"crossref","first-page":"573","DOI":"10.1175\/1520-0485(1981)011<0573:PCOPTD>2.0.CO;2","article-title":"Practical conversion of pressure to depth","volume":"11","author":"PM Saunders","year":"1981","journal-title":"J Phys Oceanogr."},{"key":"pone.0337093.ref054","unstructured":"CEVA, Inc. 1000-3927 - BNO08X datasheet. 2023."},{"issue":"1","key":"pone.0337093.ref055","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1121\/1.2961145","article-title":"Underwater ambient noise","volume":"3","author":"PH Dahl","year":"2007","journal-title":"Acoustics Today."},{"key":"pone.0337093.ref056","doi-asserted-by":"crossref","first-page":"1936","DOI":"10.1121\/1.1909155","article-title":"Acoustic ambient noise in the ocean: spectra and sources","author":"GM Wenz","year":"1962","journal-title":"J Acoust Soc Am."},{"key":"pone.0337093.ref057","unstructured":"Kester W. Analog devices MT-022 ADC architectures III: sigma-delta ADC basics. 2008."},{"key":"pone.0337093.ref058","unstructured":"Analog Devices, Inc. Data sheet: 8-\/4- channel, 24-bit, simultaneous sampling ADC. Analog Devices, Inc. 2018."},{"issue":"8","key":"pone.0337093.ref059","article-title":"Drone-based application of whale tags: a \u201ctap-and-go\u201d approach for scientific animal-borne investigations","volume":"20","author":"DM Vogt","year":"2025","journal-title":"PLoS One."},{"key":"pone.0337093.ref060","doi-asserted-by":"crossref","first-page":"219","DOI":"10.3354\/meps13344","article-title":"Short-term responses of sperm whales Physeter macrocephalus to the attachment of suction cup tags","volume":"645","author":"V Warren","year":"2020","journal-title":"Mar Ecol Prog Ser."},{"key":"pone.0337093.ref061","unstructured":"Rodriguez-Garavito C, Gallant J. Listening to the more-than-human world: Legal & ethical principles for nonhuman animal communication technologies. 2024. [cited 2024 Dec 18]. https:\/\/www.openglobalrights.org\/listening-to-the-more-than-human-world-legal-and-ethical-principles-for-nonhuman-animal-communication-technologies\/"},{"key":"pone.0337093.ref062","article-title":"What if we understood what animals are saying? The legal impact of AI-assisted studies of animal communication","author":"C Rodriguez-Garavito","year":"2024","journal-title":"Ecology Law Quarterly."},{"key":"pone.0337093.ref063","unstructured":"APRS Working Group. APRS Protocol Reference: Protocol Version 1.0. 2000."},{"key":"pone.0337093.ref064","unstructured":"Bruninga B. APRS-IS. [cited 2024 June 14]. https:\/\/aprs-is.net\/"},{"key":"pone.0337093.ref065","unstructured":"APRS. [cited 2024 June 14]. https:\/\/aprs.fi\/"},{"key":"pone.0337093.ref066","article-title":"Bioinspired surface structures for added shear stabilization in suction discs","author":"AM Hernandez","year":"2024","journal-title":"Scientific Reports."},{"key":"pone.0337093.ref067","article-title":"Calibration of hydrophones","author":"PA Levin","year":"1973","journal-title":"Bruel and Kjaer Technical Review."},{"key":"pone.0337093.ref068","doi-asserted-by":"crossref","first-page":"2306","DOI":"10.1121\/1.406451","article-title":"Speed of sound in pure water as a function of temperature","volume":"93","author":"N Bilaniuk","year":"1993","journal-title":"The Journal of the Acoustical Society of America."},{"issue":"1","key":"pone.0337093.ref069","doi-asserted-by":"crossref","first-page":"326","DOI":"10.1109\/TVT.2021.3120201","article-title":"A time difference of arrival based target motion analysis for localization of underwater vehicles","volume":"71","author":"T Alexandri","year":"2022","journal-title":"IEEE Trans Veh Technol."},{"key":"pone.0337093.ref070","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1155\/2020\/6403161","article-title":"A review of underwater localization techniques, algorithms, and challenges","volume":"2020","author":"X Su","year":"2020","journal-title":"Journal of Sensors."},{"key":"pone.0337093.ref071","article-title":"Detecting the presence of sperm whales\u2019 echolocation clicks in noisy environments","author":"G Gubnitky","year":"2024","journal-title":"IEEE\/ACM Transactions on Audio, Speech, and Language Processing."},{"key":"pone.0337093.ref072","volume-title":"Vowels and Diphthongs in Sperm Whales","author":"G Begu\u0161","year":"2023"}],"container-title":["PLOS One"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0337093","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,11]],"date-time":"2025-12-11T18:44:50Z","timestamp":1765478690000},"score":1,"resource":{"primary":{"URL":"https:\/\/dx.plos.org\/10.1371\/journal.pone.0337093"}},"subtitle":[],"editor":[{"given":"Vitor","family":"Hugo Rodrigues Paiva","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"editor"}]}],"short-title":[],"issued":{"date-parts":[[2025,12,11]]},"references-count":72,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2025,12,11]]}},"URL":"https:\/\/doi.org\/10.1371\/journal.pone.0337093","relation":{},"ISSN":["1932-6203"],"issn-type":[{"value":"1932-6203","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,12,11]]}}}