Two extremely rare glass sponge reefs were discovered in 2012 off the coast of British Columbia and Alaska through the use of a remotely operated vehicle (ROV). The reefs had its first scientific exploration recently, which revealed one healthy reef and one mostly dead, ancient reef. The chief government scientist who’s part of the team that studies the reefs said it was “definitely a geologically sound reef with a low live sponge cover. It still seemed to provide homes to quite a few animals, but we don’t know whether and how this reef will rebuild its live sponge cover.” Nonetheless, the team hopes that these reefs can expand from their current conditions. They believe that these sponges act as both a giant ocean filter and essential habitat for marine life.

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