Lionfish

Bright and striking but invasive, lionfish thrive in Crete's warm waters, reminding us of the delicate balance of marine ecosystems. Their venomous spines and voracious appetite make them formidable predators with few natural enemies in the Mediterranean.

Habitat: Rocky reefs, wrecks, caves

Best season: Year-round

In Crete

Lionfish arrived in the Mediterranean through the Suez Canal (a process called Lessepsian migration) and were first spotted in Cretan waters around 2015. Greek marine biologists actively monitor their spread. While beautiful, they pose a threat to native fish populations.

Behaviour

Lionfish are ambush predators that corner prey using their fan-like pectoral fins. They hunt at dawn and dusk, consuming up to 30 times their stomach volume. In their native Indo-Pacific, sharks and groupers control their numbers, but Mediterranean species haven't learned to prey on them.

Diving tips

You'll definitely find them on the Minnewaska wreck and our Koutalas dive site, often hiding under overhangs and in crevices. Never touch them as their spines deliver a painful, venomous sting. Beautiful to photograph but maintain a safe distance.