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Why do invasive species matter?

noaasanctuaries: noaasanctuaries: This is an Indo-Pacific lionfish. Lionfish are native to the Pacific Ocean, but in recent years they’ve been appearing in the Atlantic, Gulf of Mexico and Caribbean, including in Gray’s Reef, Florida Keys, Flower Garden Banks and Monitor national marine sanctuaries. With 18 venomous spines, they’re dangerous for divers in those areas. But it’s not just humans that are at risk: lionfish are threatening entire ecosystems.
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