Spider was inside a curled up leaf that was stuck together with web.
Pyrgomorphidae: Atractomorpha similis or A. australis - Green Grass Pyrgomorph
All photos of the same insect from different angles. Amazing camouflage!
A pair of Sydney's Pygmy Pipehorse (Idiotropiscis lumnitzeri) while diving at Montague Island on the NSW South Coast, Australia.
Due to the size of these guys I could only see the white coloured one at the time I was taking the photo. I found the second one on viewing the photo after the dive.