A toxic algal bloom affecting South Australia’s coastline since March 2025 has killed more than 14 000 marine animals and spread across over 5 000 km² (1 930 mi²), prompting the state government to declare a natural disaster.
A toxic algal bloom impacting marine animals has been observed along the Southern California coast in late April 2025, according to experts. The event, producing the neurotoxin domoic acid, has resulted in the most severe dolphin stranding associated with a toxic algal bloom ever recorded in the region.
The southern area of Los Lagos, Chile, has been affected by the unprecedented red algal bloom over the last month. The phenomenon has caused thousands of local fishermen to protest the government's "insufficient" effort to alleviate the economic…
The "La Salina" lagoon in Huatulco, Mexico, known for its pollution, has changed its color into blood red on February 25, 2016. Experts from the Universidad del Mar (UMAR) explained the phenomenon as algal bloom caused by pollution, lack of rain and high…
NOAA Fisheries’ Northwest Fisheries Science Center in Seattle has mobilized extra scientists to join a fisheries survey along the West Coast to chart an extensive harmful algal bloom (HAB) that spans much of the West Coast and has triggered numerous closures of im
A bioluminescent algal bloom created by Noctiluca scintillans, commonly known as Sea Sparkle, is turning Hong Kong's seashores into a spectacular and disturbing sight this week. Scientists say the fluorescent blue glow is an indicator of a harmful algal bloom. Altho
The largest red tide bloom seen near Florida since 2005 has already killed thousands of fish and may pose a greater health threat if it washes ashore as expected. The bloom is located about 20 miles (32 km) off the coast of Florida and is about 60 mi
