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Flat Rock research project

Image of waves washing onto Flat Rock in the Moreton Bay Marine Park in Queensland.

Waves washing onto Flat Rock in the Moreton Bay Marine Park in Queensland.

Flat Rock, in Moreton Bay Marine Park, is one of the most popular dive sites in Queensland and is one of the four known areas where grey nurse sharks congregate. Field work at Flat Rock started in March 2018.

Flat Rock in detail

Image of grey nurse sharks (Carcharias taurus) swimming in the gutters at Flat Rock in Moreton Bay Marine Park.

© Carley Kilpatrick.

Grey nurse sharks (Carcharias taurus) swimming in the gutters at Flat Rock in Moreton Bay Marine Park.

There are more than 10 commercial dive operators with access to Flat Rock. However, there are three operators that frequent the site with one other operator using the site during peak grey nurse shark aggregation periods. In addition, several other dive operators, plus a few dive clubs and several recreational vessels, visit the site.

Map image of Flat Rock bathymetry (underwater mapping).

© University of Queensland with permission.

Flat Rock bathymetry (underwater mapping) (view larger image).

Divers have reported fewer than usual numbers of grey nurse sharks in the main shark gutter at Flat Rock during the peak aggregation period. They have suggested that the sharks are being disturbed and moving away from the normal congregation areas. This has not been scientifically confirmed.

Grey nurse shark close-up.

© Carley Kilpatrick.

Grey nurse shark close-up.

Links to increased diver numbers and or presence are still unclear. The project team is currently investigating this behaviour at Flat Rock using the same reliable, scientific methodology as they used for the Wolf Rock site.