This was the second dive for the day, but the first with my camera. Four of us swam around the right and side of Petaj. While we were protected by the reef, the surface was still quite choppy, and the visibility reflected this.

 

Divers: Peter Batchelor, Sara, Chloe, Seb.
Weather/Sea: SE 20+ kts. Fairly choppy.
Visibility: 20 Metres.
Water temperature: 22°C.
Maximum depth: 16 metres.
Time of entry: 14:15.
Duration: 49 minutes.

Creatures spotted on this dive included the following:

Humbugs
Pinstriped Butterflyfish
Saddle Butterflyfish
Blue and Gold Angelfish
Black and White Snapper
Green Turtle 
Vagabond Butterflyfish
Monocle Bream
Redbreasted Wrasse
Yellowtail Fusilier
Masked Grouper 
 Moorish Idol
Bird Wrasse
Pacific Bullethead Parrotfish
Pacific Trumpetfish
Bicolour Chromis

I filmed diving the same location back in 2014: https://www.batchelors.net/diving/2014/63-diving-on-the-great-barrier-reef-milln-reef-petaj