you're a marine encyclopediaYeah thats my guess
yellowtail fusilier ,,Caesio cuning can get up to two feet looks like the ones in the video plus the dive company who posted the vid is located in Australia on the GBR
Haha Lizard island has been on my bucket list for over 25 years mainly for the lizards in that archipelago since I used to breed iguanas back in the 90’s .. I remember seeing old photos of wheel barrel sized clams. Think its been a preserve since the 30’syou're a marine encyclopedia