Manta alfredi is known to occur off both the western and eastern Australian coasts.
Early data from this project showed that manta rays travel a distance of at least 500km between Lady Elliot Island in Queensland and Byron Bay in New South Wales within few months.
Several predictable aggregations sites have been identified in eastern Australia
• OSPREY REEF_ popular for the regular sighting of manta rays throughout the year
• HERON ISL _ mantas are regularly seen around the outer reef
• LADY MUSGRAVE ISL _ mantas are frequently sighted all year around
• LADY ELLIOT ISL (LEI) _ manta can be seen all year around but aggregate by hundreds during the winter months
• NORTH STRADBROKE ISL (NSI) _ tens of mantas can be observed daily during summer months, from October until March-April
• BYRON BAY _ known for regular sightings of few mantas during summer months
• SOLITARY ISLANDS _ manta annually aggregate to around January until May of each year