An urgent call to action is echoing through the conservation community as the tragic death of a leatherback turtle highlights a critical issue at the Canso Causeway, the vital link between Cape Breton and mainland Nova Scotia. But here's where it gets controversial: while this structure is essential for human connectivity, it’s becoming a deadly barrier for one of the world’s most endangered species. Could our infrastructure be inadvertently contributing to the decline of these ancient creatures? Let’s dive deeper.
The Canadian Sea Turtle Network, led by executive director Kathleen Martin, has sounded the alarm after a GPS-tracked leatherback named Dina succumbed to exhaustion and hypothermia in late 2024. Dina’s plight wasn’t an isolated incident—she attempted to cross the Canso Strait nine times, only to be thwarted by the causeway and its tidal lock. And this is the part most people miss: the causeway forces these turtles into a perilous detour, pushing them into colder waters that can be fatal. It’s like asking them to swim north to go south—a confusing and life-threatening detour.
Leatherbacks, the world’s largest reptiles, are already on the brink of extinction, protected under Canada’s Species at Risk Act. Each spring and summer, they migrate north to feast on jellyfish, but their journey is instinctual, and the causeway disrupts this ancient pattern. Martin emphasizes that this isn’t just a theoretical problem—it’s a scientifically proven issue with deadly consequences. She estimates at least 10 similar deaths, though the true number is likely much higher, as not all turtles are tracked or found.
Here’s the bold truth: internal emails from the Department of Fisheries and Oceans (DFO) reveal that the Canso Causeway fails to meet the requirements of the Fisheries Act. Wendy Williams, DFO’s regional director of aquatic ecosystems, confirmed this in writing. Yet, despite this acknowledgment, action has been slow. A rescue attempt for Dina was even canceled due to logistical challenges and a lack of experience in handling leatherbacks at sea.
So, what’s the solution? Martin argues that we must tackle the inconvenient and difficult tasks head-on. “We know it’s a problem. Let’s fix it,” she urges. But who’s responsible? The causeway has been under provincial ownership since 2014, while the canal locks are set to transfer to the Department of National Defence this April. The provincial government has pledged to consider enhancements for aquatic life in future designs, but environmental law experts warn that enforcement is unlikely without federal intervention.
Here’s where it gets even more contentious: Canadian law doesn’t apply retroactively, meaning the causeway, built in the 1950s, isn’t held to modern fish habitat standards—unless it’s modified. Michael Kofahl of East Coast Environmental Law points out that any repairs or updates would fall under the Fisheries Act, but policy isn’t law. Meanwhile, Darren Porter, a Nova Scotia fisherman who exposed the internal emails, accuses the DFO of neglecting its duty to protect leatherbacks, focusing instead on penalizing fishers.
As the debate heats up, one question lingers: Are we willing to prioritize endangered species over infrastructure convenience? The fate of the leatherbacks hangs in the balance, and the world is watching. What do you think? Should we demand immediate changes to the Canso Causeway, or is this a necessary trade-off for human progress? Let’s spark a conversation in the comments below.
