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Definition of Barrel sponge
1. Noun. (biology) A large, brown sponge, ''Xestospongia testudinaria'', from the waters of Australia and the Indian Ocean ¹
¹ Source: wiktionary.com
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1. Noun. (biology) A large, brown sponge, ''Xestospongia testudinaria'', from the waters of Australia and the Indian Ocean ¹
¹ Source: wiktionary.com