Butterflyfish: A butterflyfish biting on a stone coral. The advantage of a long lens is that one can take pictures of fish without disturbing their natural behaviour. But the water has to be very clear. If the distance is one meter and more image contrast is lost. The strobe light has to travel the distance twice. Dive #366: Monkey Beach, Sabang, Mindoro Island, Philippines. Nikon D200, 1/250 s, F/9.0, 105 mm, ISO 100, Saturday, November 14, 2009 08:50:06