Taking to social media, Maltese marine biologist Alan Deidun shared images photopraphed by Alessandro Grasso off the coast of Liguria, Italy.
‘This is a bloom of miniature ‘sailing boats’, known as ‘by-the-wind-sailors… These are actually colonies of polyps attached to a single ‘raft’ with a ‘sail’ made of chitin on its head.’
Deidun explained that they are common in the Mediterranean at this time of the year but their blooms have grown bigger and bigger in recent years.
‘DON’T PANIC’, urged Deidun. ‘These are generally harmless to humans as long as you don’t do something stupid such as rubbing your hands with them and then touching your face’.
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Source: Alessandro Grasso