Studying marine mammals vocalizations in the ocean has been an ongoing Ocean Networks Canada project. A number of hydrophones have been installed and tested on the VENUS observatory, both in Saanich Inlet and the Strait of Georgia. As identified by the research community, the main area of interest in this research is the Strait of Georgia. A busy marine traffic lane, home to the resident Killer Whales, the Strait also provides a hunting ground for transient Killer Whales.

Today we wanted to feature sounds captured on the deepest (300m) Central Node hydrophone system in the...