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Agencies in Tasmania are striving to determine a rosy sludge that has appeared on a isolated coast, with a number of researchers concerned it could be an algal bloom.

Extensive Occurrence Along Shore

The rosy-colored ooze was found on a stretch of a coastal area about 60km south of the city. A like substance has also been documented on sections of another local beach and Little Taylors Bay.

Specimens Taken for Testing

Examples have been gathered and provided to the environmental agency for testing. A official stated that "algal blooms are a natural occurrence in response to variations in food sources, heat, rainfall or illumination".

"These blooms are occasionally called reddish tides because the outbreaks can change the water reddish," the official added. "Only some algal blooms are toxic, with numerous types serving as a major source of food for marine life in the aquatic ecosystem."

"The usual source of reddish water in local waters is the marine phytoplankton Noctiluca scintillans, which can cause bioluminescent light displays at night."

Growing Frequency Linked to Global Warming

Algal blooms occur naturally but their occurrence has risen in the past few years, in part due to environmental shifts and pollution that combine to create nutrient-rich waters geared for the rapid spread of dinoflagellates.

Dinoflagellates are a phytoplankton species that usually function as the ocean's detritus consumers. During a bloom, there is a fast increase in their populations that disrupts the proper operation of marine environments.

These occurrences have been equated with subsurface wildfires and can keep expanding as long as the environment is suitable. In more extreme scenarios, sensitive marine ecosystems can be devastated as marine life is killed or smothered, offering more minerals for the bloom.

Past Devastating Outbreak in South Australia

South Australia in the past grappled with a severe algae outbreak along its coastal region after a string of oceanic warm spells, which spread across an extensive zone. The event resulted in surfers with sore eyes and severe coughing and may have caused the death of up to a quarter-million sea creatures across hundreds of species, according to agency assessments.

Expert Opinion on the Local Event

An estuarine ecologist, who assisted in examining the onset of the previous event said, based on images of the Tasmanian outbreak, the probable type involved was Noctiluca scintillans, a form of dinoflagellate also known as "sea sparkle".

"There are many of these events around the island of late," she remarked.

The expert stated the algae did not generate toxins like the type involved in South Australia's severe algal bloom, but it does ingest small invertebrates and "numerous fish eggs", meaning aquatic creatures were particularly vulnerable.

"Typically one notices a proliferation of this algae after a proliferation of something else, or an event such as a marine breeding," she noted.

Appeals for Investigation and Community Health

A campaigner, who collected samples of the pink sludge in the state, said it looked like the potential proliferation had "grown significantly" and proposed the aquaculture sector was the most likely culprit, pointing to comparable events overseas.

"Therefore we needs to issue a strong warning here, the government and the environmental agency need to react to this. We need to study the examples we've gathered and we need to inform the public here," she stated.

The scientist said she had concerns for community health after experiencing a prickling feeling along her body while being exposed with contaminated seawater.

Claims of Deceased Marine Life and Appeals for Leadership Action

An advocacy organization has stated deceased sea creatures and dead sea cucumbers washing ashore, with a veteran activist labeling the circumstances as an "natural disaster" and demanding the state premier to visit and "lead the effort that government must be doing".

"Officials needs to understand this is a catastrophe in the happening, economically as well as environmentally."

Government Response

Talking with journalists, the premier said he was not aware of any connections between the algae outbreak and the aquaculture sector, saying laboratory analysis was necessary before conclusions could be made.

"It is vital to guarantee our rivers and seas are environmentally safe and viable," he remarked.

"Our coastal assets across the island are our treasures and we need to guarantee the people and our business sector can coexist to use our aquatic resources productively and responsibly."