Sunshine Coast Underwater Listening Station

Photo take from land by Suzette Alvarez.

The Sunshine Coast (Mary Gordon) Underwater Listening Station is situated near Secret Cove. It is the first of its kind in this area, allowing us to collect vital data on the presence of marine life and vessel traffic in the Malaspina Strait.

Humpback whales bubblenet feeding on the central coast.
Photo by Valeria Vergara.

Acoustic research and outreach in new waters

The Listening Station features a hydrophone – an underwater microphone – sitting at roughly 20m depth on the seafloor. These finely-tuned instruments detect a range of frequencies that enable us to hear whales, dolphins, fish and – importantly – anthropogenic noise from vessels and industrial activity. This area of the coast has been under-sampled acoustically, with few hydrophones collecting long-term data. Our goals are to monitor the presence of at-risk cetacean species in the area by detecting their vocalizations, to track noise levels and potential impacts from boats and other human activities, and to bring the sounds of this ocean environment to residents of the Sunshine Coast. Bigg’s killer whales are often seen in the area year-round, hunting or travelling along the shoreline. In the fall, humpback whales are often seen close to shore, using the up-welling currents to feed on small fish and plankton. If we’re lucky – we’ll hear them sing!

A “killer” view over the Malaspina Strait

The visual component of the Listening Station features a striking, 180-degree view of the Malaspina Strait, which stretches from South Thormanby Island to the north of Texada Island. We chose this specific site to install the camera and hydrophone for its sweeping vantage point and its proximity to killer whales, humpback whales and other marine species that often frequent the area. To help bring this underwater world to the public, both the camera and hydrophone stream live sounds and visuals to Raincoast’s YouTube channel. The stream is also featured at the TidePools Aquarium, where visitors can experience the sights and sounds of the coast in real-time. As the first of its kind on the Sunshine Coast, it offers a unique opportunity to connect people to the ocean, raise awareness about local marine ecosystems, and champion stewards of marine conservation through this immersive window into the marine soundscape.

Southern Resident killer whales swim by in the Salish Sea.
Photo by Andy Wright.
Humpback whales bubblenet feeding on the central coast.
Photo by Valeria Vergara.


A collective effort for conservation

This Listening Station would not have been possible without the support of community members and organizations. Deploying and maintaining these systems is not always easy (or cheap!) owing to the harsh winds, tides and rocky intertidal shorelines that this coast is famous for. The initial purchase of the hydrophone was made possible by a generous bequest from the Mary Gordon Estate in 2023 – read more about Mary here. Since then, local funders have continued to support the initiative through financial and in-kind contributions. We would especially like to thank the Sunshine Coast Foundation, the Sunshine Coast Regional District, the District of Sechelt, BlueAct Marine Society, Sea-to-Shore Systems, NW Technical, Marshall Farris & Suzanne Alvarette, and Doug & Sheila Rogers.

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