It is difficult to spot pygmy seahorses; more difficult to get a good shot. But the DM's at Derawan will show you the resident pair of night pygmy seahorses (Scubadru over on wetpixel tells me these are hippocampus pontohi). These animals are so small, they would be bullied by a small pygmy seahorse. Closest I could get the camera was 30 cm away; from where couldn't see them in the LCD -- so the photos were in point and shoot and pray mode.