Diving is a great activity but most people tend to do this in daylight hours, at this time you get to see all the usual suspects on the reef.
If you dare to venture into the water after dark it's a completely different world, the usual reef fish disappear and the weird and wonderful come out to play.
During a training dive along with the wife "Koz" and her student we encountered this strange pair.
Cuttlefish can shape shift and change colour at will, these guys were planting their eggs in the reef, quite large at about a foot long they are one of the coolest things to see.
Under torch light we got to see them changing colour and towards the end of the video you will see them perform another one of their tricks, glowing bright green to ward us off.