Posts tagged glass sponge reefs
Glass sponge reefs: A Canadian wonder.

The fossil record came alive for marine scientists in 1987, when a unique and vibrant species known as glass sponge coral was discovered living just off the Pacific Coast of North America. These 9,000 year old glass sponges are composed almost entirely of glass (silica) and exist individually in deep seawater or scaffold together to build large reef communities deep on the ocean floor. Located beyond scuba depths, these reefs remain unreachable to many scientists and can only be studied up close using undersea technology.

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