It's all about the angle when searching for dragons.
Leafy Seadragons are masters of camouflage, blending into kelp or any of the other brown algaes they associate themselves with. You could be looking right at one from the side or from above and not even realise it. Get below one, however, where there is nothing but dragon and blue sky above, and that amazing outline is brought into dramatic relief.
Another magical dive at The Bluff on a day that provided all the angles.
Photo: Robert Rath, 'It's All About The Angle', 1/5000s f/7.1 ISO400 15mm