Marine algal bloom notice – Shelly Beach, Toowoon Bay, Soldiers Beach and Lakes Beach

Update: 1.10pm, Friday 9 January 2026

Council advises that Lakes Beach reopened at 10.45am today after being closed earlier this morning, with the algal bloom having dissipated thanks to current wind and tide conditions.

No other patrolled beaches across the Coast have reported algae at the main site or back beach areas. All locations will continue to be monitored, and signage will be placed as needed.

Over the weekend, Surf Life Saving’s Beachsafe website will be updated regularly based on reports from Surf Life Saving patrols across 15 sites. Conditions can change quickly, so check Beachsafe and always follow directions from lifeguards, lifesavers and signage.

If you spot the bloom or its bioluminescent glow at night, please share your photos and tag Council on Facebook or Instagram.

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A naturally occurring marine algal bloom has been identified on Central Coast beaches. The species, Noctiluca scintilla, commonly known as sea sparkle or sea twinkle, has been confirmed at Shelly Beach, Toowoon Bay and Soldiers Beach, with reports of further sightings at Lakes Beach. The algae has also been identified at beaches in Lake Macquarie and Newcastle. These blooms are common at this time of year and can move with winds and tides, so they may appear at other beaches over the coming days.

The algae currently appear as a red or pinkish colour and may turn brown as it breaks down. While sea sparkle is generally not considered toxic, it’s best to avoid swimming or direct contact with the discoloured water because it can cause skin and eye irritation. Dogs can also be affected, so please keep pets out of impacted areas. Beachgoers should follow any signage and directions from lifeguards when visiting these beaches.

One of the most striking features of this species is its bioluminescence! Upon darkness, blue flashes of light can be observed in agitated waters such as the wave zone.