Crater Sponge

Hemimycale columella This sponge encrusts rocks in thick, soft layers. It has a honeycomb texture which varies in colour from red to pale orange, yellow or pink. The depression craters are highlighted by a light coloured ridge. The depressions contain the inhalant pores, and are covered by a fine, gauze-like mesh. Width up to 30cm... Continue Reading →

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