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Sponge reef

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Exploring Beautiful Glass Sponge Reef | Nautilus Live

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How to Add Sponges to a Reef Tank

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Rare glass sponge reefs found off B.C. coast

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Glass Sponge Reefs - The Basics

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Sea Sponge Facts: 10 facts about Sea Sponges

Sponge reefs are reefs formed by Hexactinellid sponges, which have a skeleton made of silica, and are often referred to as glass sponges. Such reefs are now very rare, and found only on the western Canadian continental shelf. Although common in the late Jurassic period, sponge reefs were believed to have gone extinct during or shortly after the Cretaceous period, until the existing reefs were discovered in 1987–1988 - hence these sometimes being dubbed living fossils.
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    • Characteristics of hexactinellid sponges 

    • Location of sponge reefs 

    • "Living fossils" 

    • Ecological significance 

    • Destruction of sponge reefs