What were the first animals? The fierce sponge-jelly battle that just won’t end

For almost two decades, scientists have debated whether sponges or comb jellies represent the first animal lineage. Now some are calling for a more harmonious approach

SINSIN
Feb 10, 2026 - 00:00
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What were the first animals? The fierce sponge-jelly battle that just won’t end

For almost two decades, scientists have debated whether sponges or comb jellies represent the first animal lineage. Now some are calling for a more harmonious approach

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