Mullaloo Beach re-opened after algae bloom

Mullaloo Beach has been re-opened on Friday morning after a two-day closure due to the discovery of an algae bloom.

Mullaloo Surf Life Saving Club posted on its Facebook page of the beach’s re-opening by Surf Life Saving WA with water conditions to be monitored on Friday and during the weekend.

The beach was closed on Wednesday afternoon due to an algal bloom of trichodesmium, also known as red tide or sea saw dust due to its resemblance.

Trichodesmium can be identified by a yellow-brown surface scum with the appearance of an oil slick and can be seen floating on the water’s surface in affected areas.

The Department of Biodiversity Conservation and Attractions spokesperson said it doesn’t manage the beach but confirmed the existence of the algae on Wednesday.

“DBCA can confirm there is Trichodesmium bloom sighted in the water at Mullaloo beach on 17 January 2024,” the spokesperson said.

“This bloom has most likely formed due to the hot and calm conditions we have experienced over the recent days.

“It is not known to be harmful to humans however it can cause minor skin irritations. It is recommended to not swim/walk through the bloom and keep pets away. If you do come in to contact, rinse with freshwater immediately.”

A Department of Water and Environmental Regulation spokesperson said on Wednesday trichodesmium “can pose some risks to public health” and decisions regarding the closure and reopening of the public beaches are determined by Local Government or the Department of Health.