Well Natural England have now decided that in England seahorses (which can only be photographed under licence) can no longer be photographed using flashes!
This is, IMHO, a set back for the conservation of this fish in England as it will alienate the people who record them, reduce the sightings recorded and to be blunt smacks of conservation extremism which inevitably has a negative impact by making the whole issue slightly suspect. In the prime area where many seahorses have most often been photographed, anchoring is still allowed in their seagrass habitat and this has a vast amount more potential for damage to them by damaging their habitat than a few flash photographs will have. I'm far from impressed.