Officials in Tasmania are working to identify a magenta ooze that has surfaced on a secluded beach, with some scientists concerned it could be an algae outbreak.
The pink-tinged sludge appeared along a portion of Randalls Bay about 37 miles south of Hobart. A like substance has also been documented on parts of another local beach and an additional coastal site.
Samples have been gathered and provided to the regulatory body for examination. A spokesperson commented that "algal blooms are a natural event in response to changes in nutrients, heat, precipitation or sunlight".
"These blooms are occasionally called crimson or rosy tides because the outbreaks can turn the water reddish," the representative added. "Only some algal blooms are harmful, with many species serving as a primary source of nourishment for animals in the oceanic food chain."
"The usual source of red tides in Tasmanian waters is the marine phytoplankton Noctiluca scintillans, which can create glowing light shows at night."
Phytoplankton proliferations are natural events but their rate has risen in recent times, partly due to climate change and pollution that combine to create nutrient-rich waters primed for the fast proliferation of dinoflagellates.
Dinoflagellates are a phytoplankton species that typically function as the ocean's detritus consumers. During a bloom, there is a quick expansion in their numbers that disrupts the normal functioning 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, vulnerable aquatic environments can be wiped out as aquatic animals is eliminated or smothered, offering more food for the proliferation.
South Australia recently grappled with a severe algal bloom along its coastal region after a succession of marine heatwaves, which spread across a vast area. The outbreak resulted in swimmers with eye irritation and severe coughing and may have caused the death of up to a quarter-million sea creatures across hundreds of species, according to official estimates.
Faith Coleman, who was involved in studying the start of South Australia's outbreak said, based on images of the current situation, the most likely species involved was Noctiluca scintillans, a form of dinoflagellate also known as "marine shimmer".
"There are lots of these events around the island of late," she said.
The expert said the algae did not create harmful substances similar to the type involved in South Australia's harmful event, but it does consume microscopic animals and "many fish eggs", meaning marine life were in greatest danger.
"Typically one notices a outbreak of sea sparkle after a proliferation of something else, or an event such as a fish reproduction," she noted.
A marine scientist, who took samples of the rosy slime in Tasmania, stated it appeared the suspected bloom had "grown significantly" and suggested the salmon farming industry was the probable cause, citing like situations overseas.
"Thus Tasmania needs to deliver a strong warning here, the officials and the EPA need to act to this. We need to analyse the examples we've taken and we need to inform the community here," she emphasized.
Henley said she had worries for community health after experiencing a numbness along her limbs and skin while being exposed with affected seawater.
An conservation group has reported lifeless animals and expired organisms being found on the beach, with a veteran activist labeling the circumstances as an "natural disaster" and urging the local leader to visit and "assume command the response that authorities must be doing".
"The leader needs to understand this is a disaster in the happening, economically as well as environmentally."
Speaking to the media, the leader commented he was not aware of any links between the event and the farming business, stating laboratory analysis was necessary before determinations could be reached.
"It is vital to guarantee our aquatic environments are ecologically sound and long-lasting," he remarked.
"The 1,200 beaches across the state are our assets and we need to guarantee the people and our business sector can coexist to utilize our aquatic resources efficiently and responsibly."
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