Posted: Thu 21st May 2020

Blue-green algae warning issued to dog walkers after possible sighting at Anglesey beauty spot

North Wales news and information

A warning has been issued to dog walkers after a potential sighting of blue-green algae at an Anglesey beauty spot.

Natural Resources Wales (NRW) has provided advice following reports of the toxic blooms at Llyn Maelog in Rhosneigr.

The lake, which covers around 65 acres and is designated a Site of Special Scientific Interest, is a popular location for dog walking.

Pet owners are now being asked to keep their animals out of the water due to the possible presence of the algae.

In a post on Twitter, NRW said: “We recently received reports of blue green algae in Llyn Maelog, so we’re keeping an eye on it within government Covid-19 social distancing guidance.

“Llyn Maelog and other lakes can suffer from a population explosion of algae – algal blooms – in dry warm weather.

“Reports of algal bloom at Llyn Maelog (are) unconfirmed at this stage but posters (are) on site advising local people using the area for local exercise of (the) possible presence of the algae and to keep dogs out of the water as a precaution.”

Blue-green algae naturally occurs in inland waters, estuaries and the sea.

When it blooms, it is capable of creating toxins which can kill wild animals, farm livestock and domestic pets.

In humans, it can cause rashes after skin contact and illnesses if swallowed.

NRW has created an advice leaflet on what to do if you encounter the algae here.

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