Yellow buoys bob in the chilly water of a fjord near Canada’s St. Lawrence Estuary.

As the buoys silently drift through the stratified currents, an onlooker will likely have no idea about the symphony of sound playing out under the water’s surface. Digital hydrophone arrays attached to the buoys’ base are collecting sound data, capturing the ocean soundscape, searching for and studying the endangered beluga whale.

This article was featured in the September/October 2018 issue of ECO. To read, click here.

Words by: Rose Fisher and Kira Coley