But is it a zebra or is it a butterfly? Project partner Jorge Salgado suggests: “It’s a unique butterfly species with mussel wings that only inhabits the the Upper Lough Erne.”
Zebra mussel is an invasive mussel that was first observed in Ireland in 1997 but is now becoming widespread. It can use native mussel shells as substrate, as shown on this photograph taken by Jorge Salgado.
You can read about Zebra mussel in Northern Ireland in a this Zebra Mussel Management Strategy report.