- 1Université de Toulon, Aix Marseille Univ, CNRS, DYNI, LIS, Toulon, France
- 2Ocean Polaire, Paris
- 3Toulon University, Aix Marseille Univ, CNRS, IM2NP, Marseille, France
- 4Longitude181, Valence, France
- 5CIAN, Center of Artificial Intelligence in Natural Acoustics, Toulon, France
Cetacean inter-species communication remains a mystery. In some fjords of the Norwegian Arctic the concentration of their prey increases due to climate change, then also the megafauna concentration, resulting in accelerating competition and species interactions. We then aim to analyze this unknow cocktail party combining simultaneously several sources : (Orca orcinus * Megap. nov. * Baleno. physalus * Physeter
macro. * Landscape).
This is an incredible opportunity to record for the first time these pristine soundscapes during the short season of these whale runs. It has been related in a historic report of the end of the XIXth century that such whale groupement was frequent. But since the whale industry, only Oo were present. It is only after 10 years that gradually the other species investigated the area again, with most recently the Pm (nov. 2023).
Then the Center of Artificial Intelligence in Natural Acoustics (CIAN) [2] deployed its mobile acoustic laboratory on the PolarPod-Perseverance vessel. With its length of 42m, this exploration sail propulsion vessel is the future for CO2 balance, as well as for acoustic studies in dynamic conditions. Versatility and oceanographic skills of Perseverance are perfectly suited for this type of acoustic mission.
We deployed a small array, Manta-1, based on our custom hydrophones and AI embedded electronic sound card. Manta-1 was used for transects by
sail propulsion having a neutral impact on acoustics. We also deployed a fixed pentaphonic array and a long array. It resulted in a complex and
novel corpus of whale cocktail parties that has been processed by AI listening algorithms of CIAN [1]. We then model the nictemeral acoustic
cycles of each species and we test the 6x2 hypotheses of inter-species positive interactions (foraging collaboration), and negative
interactions (competition).
[1] ADAPREDAT, R Report, MITI CNRS, Glotin et al, (2024)
https://sabiod.lis-lab.fr/pub/ADAPREDAT/AAPSanteEnvironnement2022.2_Rapportfinal_GLOTIN_FJORD3D_202403.pdf
[2] https://cian.lis-lab.fr/
How to cite: Girardet, J., Glotin, H., Etienne, J.-L., Gies, V., Sarano, V., Paris, S., Jespers, S., and Giraudet, P.: PolarPod-Perseverance in Arctic listening with AI to the Old World Symphonia, One Ocean Science Congress 2025, Nice, France, 3–6 Jun 2025, OOS2025-1445, https://doi.org/10.5194/oos2025-1445, 2025.
