Sunken Canadian Warship Becomes Thriving Artificial Reef Hosting 170 Marine Species

The former Canadian destroyer escort HMCS Annapolis was scuttled on April 4, 2015, in about 32 metres of water at Halkett Bay Marine Park near Gambier Island, following removal of all hazardous materials under a permit from Environment and Climate Change Canada. The Artificial Reef Society of British Columbia oversaw the sinking and later launched the Annapolis Biodiversity Index Study, relying on diver observations to track ecological succession.

Within a year, nearly 50 species were noted, and five years later the tally exceeded 170, representing all marine phyla found in British Columbia waters. Notable findings include juvenile rockfish and lingcod, as well as lingcod egg masses, suggesting the structure provides more than shelter. Ongoing diver reports show the reef continues to attract new species, highlighting the long-term value of carefully prepared artificial habitats.