“Glass sponge reefs are unlike anything else in the world. These fragile bioherms can reach 14 metres in height and cover a square kilometre, providing an important habitat for the fish that live in them. Until about 25 years ago, people believed that glass sponge reefs had gone extinct during the Jurassic period, but then they were discovered living in very deep water in Hecate Strait in northern British Columbia.” Did you know? Early in 2016, a rare glass sponge reef as old as the dinosaurs was discovered in Prince Rupert. A globally significant treasure in British Columbia! This study needs your help to collect important visual data on the sponge bioherms. Plan your dive to include a swim around the sponge garden research markers and capture videos or photos, then submit your data online. Submit your data