We collect sightings via our community of over 3000 members posting about 100 reports every week. Each member is incentivised to post a visibility report right after being in the water, highlighting species seen, especially when they belong to the 10 targets:
Grey Nurse shark
Angelshark
Angler fish
Eastern Gobbleguts
Port jackson shark
Giant Australian Cuttlefish
Dusky Whaler shark
Australian Cownose ray
Little Penguin
Sea Turtle
The results are published on the publicly available Sydney Underwater Gazette (Facebook page)
https://www.facebook.com/The-Sydney-Underwater-Gazette-104491057975747
FAQ available here https://docs.google.com/document/d/16a0g3gPQXzy1jMISom_opDGSm02_rlrorM9JF3Al0WE/edit?usp=sharing