We have been in pack ice for the last ten days, making slow progress towards the North, always looking for seals and walruses for the scientific project. Melville Bay seems determined to keep pack ice longer than usual, and walruses are probably set up in that inaccessible area for now! So listening and playbacks are focused on bearded seals. It's about watching reactions of males, each one having his own territory, when the song of another male is played with the underwater speaker of Isabelle and Thierry. It is the female seduction period, rivalries can be hard between males, and reactions very different to this synthetic intruder!