
Giant Sponge Barrel
This Giant Sponge Barrel corals - Xestospongia muta can grow up to 2 meters height and they have been known to be hundreds to thousands of years old!
In this picture, there are hundreds if not thousands of worms (the white stringy stuff) living on it.
Usually, they also play host to small crabs living within its fold for protection.
Similar species: Haplosclerida
By Albert Kang
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Uploaded Sep 20, 2016. Captured Sep 18, 2016 09:26 in Unnamed Road, Tingloy, Batangas, Philippines.