This is worth noting before you dive in.
The EPA has advised that marine algal blooms have been noted along the south east and south west coasts of Ireland, specifically along Dunmanus Bay and Bantry Bay in Cork.
An algal bloom is a rapid increase in the population of algae in one area.
While the algae is not necessarily dangerous to humans, Cork City Council advises that it’s probably best to steer clear anyway.
The EPA have advised on https://t.co/F05Op4F2mf that marine algal blooms have been noted along the S. East and S. West coasts of Ireland, there has been reporting’s along Dunmanus Bay and Bantry Bay. See Link for more details: https://t.co/TopfsIwJP5
— Cork County Council (@Corkcoco) July 9, 2018
“These can be confused with sewage pollution but are not toxic to humans though best avoided. As they decay they can cause a strong smell.
The Marine Institute have also advised they are a non-toxic harmless species of algae called Noctiluca which bioluminescent at night, they will be updating their website on marine.ie with further information.”
Might be wise to pick another heatwave swim spot for now.