A dog has collapsed and died due to suspected algae poisoning following reports of possible blue-green algae in a seaside town. It comes after a spate of severe illnesses were reported on Anglesey - which led to at least one death.

Natural Resources Wales confirmed it had received reports of a bloom in rock pools around Penmaen Park, near Penmaenmawr Sailing Club. An NRW spokesperson said: "We’ve received a report of possible blue-green algae in rock pools around Penmaen Park near to Penmaenmawr sail club.

"Sadly, a dog has collapsed and died due to suspected algae poisoning. If you’re in the area, please keep yourselves and pets away from the water."

Read more: The 'most dangerous' North Wales neighbourhoods revealed

According to NRW, blue-green algae naturally occurs in inland waters, estuaries and the sea. Blooms can form when their numbers become excessive.

Rocky beach with sailing club in background, taken from Google Maps
The area near Penmaenmawr Sailing Club

Bloom and scum-forming blue-green algae can produce toxins. Toxin-producing blooms are called harmful algal blooms. These toxins can kill wild animals, farm livestock and domestic pets.

In humans, they can cause rashes after skin contact and illnesses if swallowed. Not all blue-green algae blooms and scums are toxic, but you can’t tell just by looking at them, so it’s best to assume they are.

Read more: