Agencies in Tasmania are attempting to pinpoint a rosy sludge that has materialized on a isolated coast, with a number of researchers concerned it could be an phytoplankton proliferation.
The magenta-hued slime materialized across a portion of Randalls Bay about 60km south of the city. A similar sludge has also been noted on parts of another local beach and Little Taylors Bay.
Examples have been gathered and sent to the regulatory body for examination. A official stated that "phytoplankton proliferations are a normal phenomenon in reaction to changes in nutrients, warmth, rainfall or sunlight".
"The events are sometimes called crimson or rosy tides because the proliferations can turn the water crimson," the spokesperson noted. "Few phytoplankton events are toxic, with numerous types serving as a key source of nourishment for marine life in the aquatic ecosystem."
"The most common cause of reddish water in these seas is the oceanic algae Noctiluca scintillans, which can cause glowing light shows at night."
Phytoplankton proliferations are natural events but their occurrence has risen in recent years, in part due to environmental shifts and pollution that merge to create nutrient-rich waters ideal for the rapid spread of dinoflagellates.
Dinoflagellates are a phytoplankton species that typically act as the ocean's garbage cleaners. During a bloom, there is a quick expansion in their colonies that disturbs the proper operation of ecosystems.
These events have been likened to underwater bushfires and can keep expanding as long as circumstances are favorable. In severe cases, sensitive marine ecosystems can be destroyed as marine life is eliminated or smothered, providing more food for the proliferation.
A southern state in the past grappled with a catastrophic algae outbreak along its southern shore after a series of oceanic warm spells, which extended across a vast area. The outbreak caused swimmers with eye irritation and severe coughing and may have eliminated up to a quarter-million sea creatures across 400 different species, according to official estimates.
A marine expert, who helped investigate the beginning of the previous algal bloom stated, based on pictures of the current situation, the probable type involved was Noctiluca scintillans, a kind of dinoflagellate also known as "sea sparkle".
"There are many of these events around Tasmania of late," she added.
The expert stated the algae did not create toxins comparable to the species involved in that harmful event, but it does ingest tiny creatures and "many fish eggs", meaning marine life were in greatest danger.
"You usually see a bloom of this algae after a outbreak of something else, or something like a fish reproduction," she said.
Lilly Henley, who collected samples of the magenta ooze in the state, stated it appeared the possible outbreak had "expanded greatly" and suggested the salmon farming industry was the primary suspect, referring to like situations elsewhere.
"Therefore Tasmania needs to issue a strong warning here, the officials and the EPA need to react to this. We need to examine the samples we've gathered and we need to put word out the public here," she emphasized.
She expressed she had anxieties for people's well-being after experiencing a numbness along her limbs and skin while being sprayed with contaminated seawater.
An advocacy organization has documented deceased sea creatures and expired organisms washing ashore, with a prominent conservationist describing the situation as an "natural disaster" and urging the local leader to see and "take control the reaction that authorities must be undertaking".
"He needs to understand this is a catastrophe in the unfolding, financially as well as ecologically."
Addressing journalists, the official said he was uninformed of any relationships between the algal bloom and the farming business, emphasizing scientific testing was needed before determinations could be drawn.
"It is vital to guarantee our waterways are ecologically sound and long-lasting," he added.
"Numerous shorelines across the state are our assets and we need to ensure the people and our economy can live together to enjoy our aquatic resources effectively and sustainably."
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