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Toxic algae bloom off South Australia devastates marine life, tourism

Peter Malinauskas, the state premier, called Tuesday's massive algae bloom off South Australia a "natural catastrophe" because it has destroyed hundreds of marine species and affected local tourism and fishing.

According to environmental officials, the algal bloom was first detected in march and covers an area of 4,500 square kilometers (1,737 square mile). It has also been aggravated due to rising ocean temperatures.

Malinauskas, a national broadcaster for ABC News Breakfast, said that "over 400 different marine species have died or been affected by this algal bloom."

This is a natural catastrophe and it should be recognized as such.

Malinauskas has announced a support package of A$14million ($9.11million) to combat the outbreak. This package matches that offered by the federal government. The A$28 million combined would help with clean-up, research and business support.

According to the environment department of Washington state, the toxic bloom is caused by an overgrowth of Karenia micromotoi algae, which damages fish gills while sucking oxygen from the water.

A marine heatwave in 2024, which saw sea temperatures rise by about 2,5 degrees Celsius (36,5 degrees Fahrenheit), contributed to the growth of this disease.

Local media reported that the bloom had a negative impact on tourism, and caused oyster and mussel farming to be temporarily closed due to an algal toxin in water.

The iNaturalist application has recorded over 13,850 dead animals including sharks, rays, and invertebrates.

Murray Watt, the federal Environment Minister, said that on Monday algal blooms were a "very severe environmental event." However he did not declare it a disaster of national proportions which would have allowed for more federal assistance.

(source: Reuters)