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Amazing! I Met the Sponge that Can Live More than 2,000 Years

Summary by Billiken
The giant barrel sponges, scientifically known as Xestospongia testudinaria, are marine invertebrates that inhabit the tropical seas of the Indo-Pacific. Although their shape resembles a large hollow barrel, their structure has nothing to do with an object manufactured by the human being: it is the result of centuries of slow and constant growth at the bottom of the sea.
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The giant barrel sponges, scientifically known as Xestospongia testudinaria, are marine invertebrates that inhabit the tropical seas of the Indo-Pacific. Although their shape resembles a large hollow barrel, their structure has nothing to do with an object manufactured by the human being: it is the result of centuries of slow and constant growth at the bottom of the sea.

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Billiken broke the news in on Sunday, June 1, 2025.
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