Get stung once in a blue moon? Never

Swimmers wanting to avoid being stung by jellyfish may want to watch the sky as much as the sea after Israeli researchers found a link between their arrival and the phase of the moon.

The Israeli study found the lunar calendar is a key determinant of when jellyfish arrive on the Mediterranean country’s shores.

In the middle of the lunar months – the days before and during the full moon – jellyfish are far more likely to swarm the beach, potentially stinging humans, the research found.

The research was conducted by the Israel Electric Corporation and the University of Haifa in northern Israel.