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Lionfish and Venomous Species Spreading in Greek Waters

Wednesday, 1 July 2026/Source: Google News/1 min read

Non-native marine species, including lionfish, pufferfish, and silver-cheeked toadfish, have been spreading through Greek waters in recent years, driven by warming seas and the expansion of the Suez Canal. These species, originally from the Red Sea and Indo-Pacific, are now present along Crete's coastline and throughout the Aegean and Ionian Seas. For visitors swimming or snorkeling in Crete, the main concern is avoiding contact with certain species: lionfish carry venomous spines, and pufferfish can be toxic if handled or consumed. Local fishermen are also affected, as these species compete with native fish and alter marine ecosystems. Authorities advise swimmers to observe marine life without touching it and to report unusual sightings to local coast guard or marine biology stations. Eating at established restaurants remains safe, as locally caught fish is regulated and inspected.

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