Country History
Engineers of Water and Story
Crustaceans — from yabbies and freshwater crayfish to crabs, shrimp, and sandhoppers — are among the oldest and most adaptable inhabitants of Victoria’s waterways and coasts. They link rivers to oceans, soil to sea, and science to story. For Indigenous peoples, crustaceans were more than food; they were spiritual messengers, ecological indicators, and symbols of the cyclical flow of water and life (Clarke 2011; Clark 1990). Across lakes, rivers, estuaries, and marine reefs, crustaceans are keystone species that recycle nutrients, clean ecosystems, and sustain biodiversity. Their claws turn the mud, their burrows aerate wetlands, and their migrations mark seasonal change. In both cultural knowledge and modern ecology, they are recognised as the quiet engineers of Country.
Origins and Deep-Time
Crustaceans are ancient — their fossil record dates back to the Cambrian Period, more than 500 million years ago (Briggs et al. 1994). Early forms evolved in the shallow seas of Gondwana, developing protective exoskeletons and jointed limbs that allowed them to dominate aquatic habitats. By the Devonian and Carboniferous periods (400–300 million years ago), crustaceans diversified into lobsters, shrimps, and crabs, occupying both marine and freshwater environments (Schram 1986). In southern Australia, Miocene marine deposits and fossil beds from Victoria’s Otway Basin and Gippsland record ancient crab and shrimp species, evidence of dynamic coastal ecosystems that once bordered subtropical seas (Darragh 1989). Their survival through mass extinctions and climate shifts makes crustaceans one of the most enduring lineages on Earth — true survivors of deep time.
Deep-Time and Cultural Timeline
The crustacean story begins in the Cambrian seas (over 500 million years ago), when early arthropods developed shells and segmented limbs, giving rise to crabs, lobsters, and yabbies (Briggs et al. 1994). By the Miocene (23–5 million years ago), fossil records show modern forms of crayfish and crabs living in warm Australian waters (Darragh 1989). For more than 40,000 years, Indigenous peoples across Victoria have harvested crustaceans as key food sources and cultural markers. Before 1788, the appearance of yabbies after rain signified the renewal of rivers and wetlands, while crabs in estuaries were signs of tidal abundance (Clarke 2011). From the colonial period (1800s) onward, crustaceans became part of early settler diets, fishing industries, and later, aquaculture. However, damming, pollution, and habitat loss led to sharp declines in many freshwater species (Horwitz 1990). Since the 20th century, research and cultural renewal have reconnected Traditional Owners and scientists in protecting these “water keepers” — vital species that sustain both ecosystems and heritage (DEECA 2022).
Types of Crustaceans in Victoria
Victoria supports a remarkable diversity of freshwater and marine crustaceans (Horwitz 1990; Parks Victoria 2020):
Freshwater Yabby (Cherax destructor): Found in rivers, creeks, and farm dams; burrowing species vital for soil aeration and wetland ecology.
Spiny Crayfish (Euastacus spp.): Large, slow-growing crayfish inhabiting cool, clear mountain streams; some, like the Gippsland Giant Crayfish (Euastacus kershawi), are among the world’s largest freshwater crustaceans.
Marine Crabs: Including shore crabs (Helice crassa), sand crabs (Ovalipes australiensis), and decorator crabs that blend into reefs and seagrass beds.
Prawns and Shrimp: Small but abundant in estuaries and nearshore habitats, forming key links in marine food webs.
Lobsters and Rock Crayfish (Jasus edwardsii): Iconic reef-dwelling crustaceans, long harvested for food and trade.
Each species plays a distinct role in maintaining the balance of Victoria’s aquatic systems.
Ecology and Role in the Environment
Crustaceans perform critical ecological functions that sustain both freshwater and marine environments:
Soil and Sediment Aeration: Burrowing yabbies and crayfish mix nutrients through the soil, improving oxygen levels and water filtration.
Decomposers: Crabs and shrimp recycle organic matter, breaking down dead plants and animals.
Food Chain Links: Crustaceans are a major food source for fish, birds, and mammals.
Water Quality Indicators: Their abundance reflects the health of creeks, estuaries, and coastal zones.
Reef Maintenance: Marine crabs and lobsters control algae and detritus, keeping coral and kelp ecosystems healthy.
In both science and Traditional Knowledge, their presence signifies the living health of Country — the rhythm of wetlands, rivers, and tides.
Crustaceans in Indigenous Culture
Crustaceans are deeply embedded in Indigenous ecological knowledge across Victoria:
Food and Ceremony: Yabbies and freshwater crayfish were roasted in coals or steamed in earth ovens, particularly after rain when they emerged from burrows (Howitt 1904; Clarke 2011).
Tools and Symbolism: Crayfish claws and shells were used as cutting tools, ornaments, and teaching objects in children’s lore.
Seasonal Knowledge: The appearance of certain species marked transitions in seasonal calendars — for example, the time of river fullness or eel migration (Clark 1990).
Spiritual Teachings: In creation stories, crustaceans were often linked to renewal, regeneration, and the deep connections between land and water.
Totemic Identity: For some coastal and riverine groups, specific crustaceans held totemic value, symbolising resilience, patience, and balance.
Their movements, much like those of eels and frogs, guided human relationships with the waterways — both practical and sacred.
Crustaceans on Wadawurrung Country
On Wadawurrung Country, from the volcanic plains of Ballarat to the coasts of Geelong and the Bellarine Peninsula, crustaceans remain central to the story of water (Wadawurrung TOAC 2023).
Yabbies and Crayfish: Found in freshwater wetlands like Lake Connewarre and Moorabool River, they were gathered after rain and cooked on open fires.
Estuarine Crabs and Prawns: Harvested at Barwon Heads and the Bellarine shores, often during tidal retreats.
Cultural Teachings: Elders taught that these animals maintained the breath of the water — digging, cleaning, and renewing the earth beneath.
Ecological Connection: Their burrowing mirrored the hydrological cycles of Country, showing where water flowed beneath the surface even in dry seasons.
Modern Wadawurrung programs are reintroducing cultural harvesting, guided by principles of balance and respect: take only what you need, and give thanks to the life of the water.
Colonial Exploitation and Environmental Change
European settlement brought rapid ecological disruption:
Overharvesting: Yabbies and crayfish became common settler foods, later collected commercially.
Habitat Alteration: Damming, agriculture, and pollution reduced natural flow and oxygen in waterways.
Marine Pressures: Industrial fishing targeted lobsters and crabs, reducing populations across Bass Strait.
Loss of Knowledge: Indigenous harvesting laws and seasonal rhythms were disregarded, breaking the cultural cycle of sustainable use (Howitt 1904; Clarke 2011).
The colonial transformation of wetlands and rivers remains one of the most significant drivers of crustacean decline in Victoria today.
Modern Science and Conservation
Crustacean conservation combines biological research with Indigenous stewardship:
Protected Areas: Alpine and freshwater crayfish species are protected under the Flora and Fauna Guarantee Act 1988 (Vic).
Monitoring Programs: Scientists track populations of threatened species like the Murray Crayfish and Gippsland Crayfish to assess ecosystem health (Horwitz 1990).
Wetland Restoration: Projects reintroduce native vegetation and natural flow cycles to support yabbies and shrimp.
Cultural Leadership: Traditional Owners lead wetland and river restoration using both ecological data and cultural knowledge (Wadawurrung TOAC 2023).
Climate Change Focus: As droughts and warming water threaten freshwater habitats, collaborative conservation aims to protect water balance and habitat connectivity (DEECA 2022).
The merging of ancient cultural law with modern science forms the foundation for enduring aquatic management in Victoria.
Symbolism and Meaning
Crustaceans embody the principles of balance, renewal, and resilience:
In Indigenous Knowledge: They represent the hidden movement of life — the unseen but vital work of cleaning and restoring.
In Ecology: They symbolise transformation and connection, bridging freshwater and marine systems.
In Story: Their cyclical emergence after rain reflects the rebirth of Country and the renewal of community.
These beings, ancient yet ever-present, teach that health flows from what lies beneath — the quiet labour of the small sustaining the great.
Conclusion
Crustaceans are among Victoria’s oldest and most vital creatures — architects of waterways and custodians of ecological health. Their story weaves through deep geological time, Indigenous culture, and modern science, connecting the ancient sea to the present tide.
From the yabbies of Wadawurrung wetlands to the crabs of Port Phillip Bay, they remind us that every living system relies on unseen workers who dig, clean, and renew.
To protect them is to protect the life of water itself — the ancient breath of Country that sustains all beings.
References
Briggs, D.E.G., Fortey, R.A. & Wills, M.A. (1994). “Morphological Disparity in the Cambrian.” Science, 256(5064), pp.1670–1673.
Clark, I.D. (1990). Aboriginal Languages and Clans: An Historical Atlas of Western and Central Victoria, 1800–1900. Monash Publications in Geography, Melbourne.
Clarke, P.A. (2011). Australian Indigenous Ethnobotany and Ethnozoology: An Overview. CSIRO Publishing, Melbourne.
Darragh, T.A. (1989). “Tertiary Mollusca and Crustacea of Southeastern Australia.” Memoirs of the Museum of Victoria, 50(1), pp.1–20.
DEECA (Department of Energy, Environment and Climate Action). (2022). Victoria’s Marine and Freshwater Biodiversity Strategy. State Government of Victoria.
Horwitz, P. (1990). “The Conservation Status of Australian Freshwater Crayfish.” Report Series No. 14, Australian National Parks and Wildlife Service, Canberra.
Howitt, A.W. (1904). The Native Tribes of South-East Australia. London: Macmillan.
Parks Victoria. (2020). River Health and Waterway Conservation Report. State Government of Victoria.
Schram, F.R. (1986). Crustacea. Oxford University Press, New York.
Wadawurrung Traditional Owners Aboriginal Corporation. (2023). Waterways and Wetland Knowledge Framework. Geelong.
Written, Researched and Directed by James Vegter 16/09/2025
Magic Lands Alliance
Sharing the truth of Indigenous and colonial history through film, education, land and community.
Copyright of MLA – 2025
Magic Lands Alliance acknowledge the Traditional Owners, Custodians, and First Nations communities across Australia and internationally. We honour their enduring connection to the sky, land, waters, language, and culture. We pay our respects to Elders past, present, and emerging, and to all First Peoples communities and language groups. This article draws only on publicly available information; many cultural practices remain the intellectual property of communities.