Vacationers scream as thousands of poisonous crabs invade Cornish beaches amid rising sea temperaturesraised.
The spiky crustacean carpeted swallow water atPorthgwyden Beachin St Ives to shed its shell before sinking into its deep-sea breeding grounds.
Marine photographer Kate Lowe – captures the ghastly moment the same week a woman snorkeling in Penzance was bitten by a blue shark Did – said: 'I'm going snorkeling' Most of the time of the year, I've never seen so many spider crabs. It looked like there were a lot of black rocks underneath.
``But within just a few steps in the water, I saw thousands of crabs.
``It was just incredible.
Many tourists were screaming at them, they were just floating shells.
The Giant Spider Crab is instantly recognizable by its elongated legs and pincer claws. They are also harmless to humans, but their bites are poisonous.
Some took the opportunity to snorkel above a pod of crabs on Saturday, even as many tourists screeched and swimmers fled the water.
When the creatures shed their shells, they return to her 300-foot depth.
They usually crouch together in huge crushes when in shallow water to protect themselves from predators.
Alastair Grant, professor of ecology in the Department of Environmental Sciences at the University of East Anglia, said, "Climate changeis leading to rising ocean temperatures," adding that fish and shellfish Sightings are increasing. They are "expanding their geographic reach."
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