Ancient shellfish used for purple dye vanishes from eastern Med. Red-mouthed rock shell was one of main sources of Tyrian purple and study blames its collapse on rising sea temperatures • /r/worldnews

Ancient shellfish used for purple dye vanishes from eastern Med. Red-mouthed rock shell was one of main sources of Tyrian purple and study blames its collapse on rising sea temperatures (theguardian.com)

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