Dugong Grazing Aggregation — Moreton Bay Australia
Moreton Bay Marine Park northeast of Brisbane contains Australia's second-largest dugong population — 600+ animals feeding on the bay's seagrass beds year-round, observable from glass-bottom boats and snorkel trips from the bay's islands. The dugong's grazing behaviour — the trail of bare sand left behind as the animal hoovers up seagrass with its U-shaped mouth, visible from above as a feeding trail across the grass bed — creates one of the world's most visible large marine mammal feeding sign, and snorkellers following a feeding dugong in clear shallow water (2–4 metres) in the bay's Peel Island and Coochiemudlo waters observe the animal's full feeding behaviour at arm's length. Moreton Bay's proximity to Brisbane (40-minute ferry) makes it the world's most accessible large dugong population for day visitors from a major city.
About this spectacle
Moreton Bay's shallow, sunlit seagrass meadows host over 600 dugongs year-round, making this one of the world's most accessible large marine mammal spectacles. Snorkellers in 2–4 metres of clear water around Peel Island and Coochiemudlo can drift alongside a grazing dugong at arm's length, watching the animal sweep its U-shaped mouth across the seafloor and leave a pale, meandering feeding trail of bare sand behind it — a living signature written across the grass bed. Glass-bottom boat passengers can read these trails from above, tracing the paths of animals that may still be visible below. The water is typically warm and calm, with morning light filtering down to illuminate the sandy bottom. The bay's closeness to Brisbane — roughly 40 minutes by ferry — means this is a genuine half-day or full-day excursion rather than a remote expedition. The dugongs are unhurried and habituated to calm snorkellers, allowing extended, unhurried observation of one of the ocean's most distinctive feeding behaviours.
When to go
Year-round
Getting there
Nearest airport: BNE. Nearest city: Brisbane.
Booking options
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