Thanks @mattidcarter.bsky.social for the fantastic effort in bringing together data from all over the North Sea. This will bring the distribution and habitat use of harbour and grey seals to a whole new level!🦭 + our Jonas Teilmann, Anders Galatius, Rune Dietz & Jacob Nabe-Nielson contributed 🧪🌐🌱🌊

2 hydrophones were carried into the Kattegat by storm, presumed lost... Vegar finds one south of Hurum! Sees our labels and gets in touch. Legend. A local rescue mission begins & all instruments were located. Data retrieved! The result was joy all round 🦭🔊🛥️ story: www.facebook.com/RibRoy/posts...

Last week, our 2 PhD students & colleagues successfully conducted a full turnover of 8 #acousticrecording stations 🎧 out in Aarhus Bay 🌊. The data feeds into a year-round #marinesoundscape monitoring programme to assess #noisedisturbance for #harbourporpoises 🚢🐬(funded by AVJ Naturfond).

At Science Week, Greenland 🌏🇬🇱 7 years of aerial survey data reveal abundance and habitat selection of the genetically distinct Kangia ringed seal, uniquely adapted to the UNESCO-listed Ilulissat Icefjord🦭🌱🌐🧬 Rikke presented research, with Aqqalu Rosing-Asvid (Pinngortitaleriffik) @GINR 🔗s in 📷

🔊 New volume covering oceanic dolphin species Ridgway & Harrison’s Handbook of Marine Mammals: An expert-written review & fantastic resource for anyone working with/ fascinated by marine mammals 🌊🐬 Our Anders Galatius has contributed the chapters on white-beaked & Atlantic white-sided dolphins 🧪🌏

It's live! Please see my new paper in Ecological Informatics on the #detection and #categorization of frequency notched echolocation from wild recordings. 🐬🔊👇 www.sciencedirect.com/science/arti...

First up we have Prof. @jonasteilmann.bsky.social giving an overview of the hight ambitious North Atlantic #minkewhale #tagging project.

Live from the Danish Marine Mammal Symposium! Here I'll be posting talks given by @marinemammalsau.bsky.social scientists! Stay tuned 🐋🐬🦭🌊🚢🔊

This week, Sweden had their first marine mammal research symposium, hosted by Johanne Stedt at #LundUniveristy This brought discussion for further scientific meetings, presentations of new #MarineMammalResearch and collaborations between the Scandinavian countries. 🐋🌍 🌱🐬 🌐 🧪

AU and NIRAS are monitoring the critically endangered Baltic harbour porpoise through the international project SAMBAH II 🌐🐬 Since last week, all equipment deployed in summer 2024 to log echolocation clicks from porpoises has been safely retrieved! 📷 captions for more details sambah.org 🧪

Our recent study in the #MarineEcologyProgressSeries highlights how body size, condition, and human impacts shape the survival of right whales & why they are so vulnerable to prey limitation and disturbance 🐋 🔗 in thread #Conservation #WhaleResearch #RightWhales #OceanHealth #MarineScience 🌐🌏🧪🌱

New York Times article discusses @nature.com paper by our Rune Dietz, Christian Sonne, and others at @au.dk and the University of Copenhagen 🌐🐋🧪🌏 @newyorktimeshaiku.bsky.social @ucph.bsky.social #Science #Research #impact #Mercury #Arcticchange

Our Rikke on fieldwork in Maniitsoq, Greenland 🇬🇱 Collecting samples to study #genetics, #feedingecology, #reproduction, and the presence of pharmaceuticals & other #persistentchemicals in harbour porpoises. See photo captions and link for project details 🐬🌐 veluxfonden.dk/en/projekt/p... 🌱🌏

We have redefined Dolphin Taxonomy 🐬 5 former Lagenorhynchus species have been reassigned to the new/revived and redefined genera: Aethalodelphis, Leucopleurus & Cephalorhynchus #marinemammalresearch #globalecology #marineecology #cetaceans #research #genetics #science 🐋🌱🧪🌐🌏

We are underway with the retrieval of detached data storage tags in the #WaddenSea 🇩🇰🦭 See photo captions and previous posts on our page for the building of retrievable tags and their deployment @au.dk #Science #biomonotoring #research #marineecology #marinemammalreasearch 🌐

PhD student Emilie Stepien uses satellite tags, CATS Cams and drones to observe seal reactions to shipping in the Wadden sea 🇩🇰 Watch a pregnant seal reacting to a sea eagle caught on drone video 🦅🦭 @emstepien.bsky.social 🧪🌐 #Wildlife #WaddenSea #HarbourSeal #AnimalBehaviour #MarineEcology

Our Senior Researcher Fredrik Christiansen recently completed the third photogrammetry field season on bowhead whales in Disko Bay, Greenland. See Thread. 🌐🌏🐋🧪 @FChristiansen.bsky.social #marinemammology #ecology #cetaceanresearch #Arctic #MarineEcology #Research #Science

🔊 Presenting the first range-and genome-wide population genomic analysis of grey seals! 🦭🌐 3812 nuclear SNPs genotyped in 188 samples from 17 sites identified 6 distinct populations and historic bottlenecks with ongoing recovery effects 🧪🌊 @au.dk doi.org/10.1111/mec.... #Science #marineecology

This week I'm out in the Danish #BalitcSea on the #SAMBAHII Project, working to monitor the remaining 500 Baltic #harborporpoise. Here, we are deploying a 4-channel array to calculate the #dectectionFunction, or the likelihood of detecting porpoise #echolocation in the study area.

🔊Paper out today with @nature.com! Despite decreasing emissions 🌏 mercury levels are rising in some species. Hg Isotopes could reveal why. Our new research shows ocean currents, may now be the main source of mercury in Arctic ecosystems. 🌐🧪🐻‍❄️🐋 @au.dk #Arctic #Mercury #Greenland #MarineEcology

After months of hard work, I finally submitted my master’s thesis! 🥳 Super proud of our work and deeply grateful to my supervisors Frants and Jeanne, and the whole @marinemammalsau.bsky.social team for being family during this time. Now fingers crossed for the defense! 🤞 #marinemammals #bioacoustics

🔊 Breaking news on foraging plasticity: Bryde's whales can decide to interrupt ongoing feeding for different reasons🐋🐟👀... Find out more on one of my PhD chapters we just published on Ethology Ecology & Evolution. tandfonline.com/doi/full/10.10… @marinemammalsau.bsky.social 🧪

Rune Dietz presented results on PFAS in Danish wildlife at #Naturmødet 2025, together with Neils Kanstrup. Dangerously high levels found in birds especially around Harboøre Tange and Agger Tange #Science #Research #MarineEcology #dkgreen 🧪🌐🐋 Recent report (Danish): dce.au.dk/fileadmin/dc...

Where should we build offshore wind farms for minimimal impacts on marine species? Discussed by Jacob Nabe-Nielsen from @au.dk on #Naturmødet in Hirtshals. He presented results from the Screening project that will facilitate a sustainable green transition in Denmark #dkgreen #Marineecology 🧪 🌐 🐋

Check out this piece on some of our latest findings on dolphin communication, in research led by our colleague Laela Sayigh.

In collaboration with researchers at NIRAS, we at @marinemammalsau.bsky.social undertook a baseline study to understand the #USBL impact on porpoise presence in the #NorthSea. We had control and impact #PAM stations, where impact stations were within 3.5 km of known USBL survey activity. 🧵2/6

The prevalence of ultra short baseline acoustic position systems, also known as USBLs 🔊, is understudied in #EuropeanWaters and its effect on marine mammals 🐋, such as the #harbourPorpoise, is mostly unknown. These systems are used in #geophysicalSurveys and during #trawling fishing activities. 🧵1/6

Our PostDoc Marina Gil has just returned from Greenland 🇬🇱 Together with local hunters, she collected samples for the AMAP CORE program - monitoring pollution in Greenland biota since 1994. It holds some of the longest time series data for Arctic wildlife 🐻‍❄️🐋 More in the photo captions 🧪 www.amap.no

Noise pollution isn’t just an inconvenience! 🔉🐬 it can disturb entire marine ecosystems. Understanding how noise disturbance affects wildlife populations requires powerful models, lots of data and a dedicated team. See the thread for what is going on in AU Ecoscience #marinemammalresearch 🌊

🎙️ 🐋 🎧 Eavesdropping on whale showdowns -- Sperm whales are stressed, orcas are mean, and the section @marinemammalsau.bsky.social is all ears for the juicy underwater drama ✨💅🏼 Great #ECSconference2025 preview talk and fantastic visualisation by @emilytgriffiths.com presenting Mel Cosentino’s work!

CATS Cams successfully deployed! 26 harbour seals in the Danish Wadden Sea have just been tagged to study the impact of tourism 🦭 This included deployment of 10 CATS Cams and Daily Diary loggers in a new comparative study on foraging ecology between Danish harbour seals and Australian fur seals🧪

go.bsky.app/GvVGHgK Those of us currently on BlueSky:

This week, our researchers are preparing for fieldwork in Sarasota Bay, Florida, to collect acoustic data on bottlenose dolphins 🐬. While prepping the equipment, students from our Acoustic Ecology Lab took part in DTAGs tracking training. They were happy to see how their data is collected! 🔊🌊

Jonas & Rune building tags for next week’s seal tagging trip to the Danish Wadden Sea! 🦭 Using CATSCAM & behavioural tags to capture hunting in action! 🎥🐟 How do harbour seals react to tourist disturbances? + a comparative study of foraging behaviour to Australian fur seals with @DeakinUniversity.

The grey seal is back in Denmark after nearly a century!🦭 'To inform management of the budding Danish breeding population, we are telemetry tagging and genetically profiling a sample of the few pups born in 🇩🇰 to get data on their relatedness, movements and habitat use.´- Anders Galatius 📷 Last week

Welcome to the Marine Mammal Section at Aarhus University! 🐋 (@au.dk) Here, we will share weekly updates on our research, discoveries and fieldwork, along with insights from our team of wildlife researchers🐬🐻‍❄️🦭. If you are interested in what we do, stay tuned. We have a lot to share.. ✨