Unidentified Magenta Ooze on Isolated Tasmanian Shoreline Raises Concerns of Likely Phytoplankton Proliferation
Agencies in Tasmania are striving to determine a magenta ooze that has surfaced on a isolated coast, with a number of researchers concerned it could be an algae outbreak.
Extensive Occurrence Across Beaches
The magenta-hued slime materialized across a portion of a coastal area about 60km south of the capital. A like substance has also been recorded on areas of Little Roaring Beach and Little Taylors Bay.
Samples Taken for Analysis
Samples have been collected and submitted to the regulatory body for examination. A representative remarked that "algal blooms are a natural occurrence in reaction to variations in minerals, temperature, rainfall or sunlight".
"The events are at times called red or pink tides because the proliferations can color the water red," the spokesperson added. "Only some algae outbreaks are dangerous, with several kinds serving as a key source of nourishment for creatures in the oceanic food chain."
"The usual source of red tides in local waters is the sea plant Noctiluca scintillans, which can cause bioluminescent light displays at night."
Increasing Occurrence Linked to Climate Change
Algae outbreaks occur naturally but their rate has increased in recent years, partly due to climate change and environmental waste that merge to create nutrient-rich waters ideal for the fast proliferation of dinoflagellates.
Dinoflagellates are a phytoplankton species that typically act as the ocean's detritus consumers. During a bloom, there is a rapid growth in their populations that interferes with the proper operation of marine environments.
These events have been equated with underwater bushfires and can keep expanding as long as the environment is suitable. In worse situations, vulnerable aquatic environments can be destroyed as marine life is destroyed or suffocated, supplying more food for the bloom.
Past Catastrophic Event in a neighboring state
Another region in the past grappled with a devastating algal bloom along its southern coastline after a series of sea temperature spikes, which expanded across thousands of square kilometres. The bloom caused surfers with irritated eyes and severe coughing and may have killed up to 250,000 marine animals across hundreds of species, according to government calculations.
Specialist Opinion on the Tasmanian Situation
Faith Coleman, who assisted in examining the beginning of the previous algal bloom said, based on pictures of the Tasmanian outbreak, the most likely species involved was Noctiluca scintillans, a type of dinoflagellate also known as "sea sparkle".
"We have seen lots of these blooms around Tassie of late," she said.
The scientist said the algae did not generate toxins comparable to the organism involved in South Australia's devastating event, but it does eat small invertebrates and "numerous fish eggs", meaning aquatic creatures were in greatest danger.
"It's common to observe a bloom of this algae after a outbreak of another organism, or an event such as a fish reproduction," she noted.
Calls for Investigation and Safety Concerns
A marine scientist, who took samples of the rosy slime in the state, commented it seemed the potential proliferation had "grown significantly" and indicated the salmon farming industry was the primary suspect, pointing to similar cases elsewhere.
"So we needs to issue a strong warning here, the authorities and the EPA need to act to this. We need to examine the examples we've gathered and we need to inform the people here," she said.
She expressed she had worries for people's well-being after experiencing a numbness along her limbs and skin while being splashed with affected seawater.
Reports of Lifeless Sea Creatures and Calls for Government Response
An environmental foundation has stated lifeless animals and dead sea cucumbers being found on the beach, with a prominent conservationist calling the situation as an "natural disaster" and calling on the government head to visit and "take control the response that government must be doing".
"The leader needs to understand this is a crisis in the making, commercially as well as environmentally."
Leadership Reaction
Speaking to reporters, the premier said he was did not know of any links between the algae outbreak and the farming business, stating laboratory analysis was required before conclusions could be made.
"We need to ensure our rivers and seas are safe for nature and long-lasting," he added.
"Numerous shorelines across Tasmania are our treasures and we need to make sure the people and our economy can coexist to utilize our seas productively and responsibly."