Posted by Chris on May 14, 2004 at 21:11:59:
I recently bought a filters for doing underwater florescence photography from NightSea. The set up includes UV filters for the strobes and my UK100 which filter out the visible light and only pass UV. There is also a filter for the camera which blocks blue and UV, and a filter to put over my mask that also blocks the blue and UV.
Then week ago on the Sea Divers trip to San Miguel Island I did a night dive at Cuyler Harbor to try the set up.
Swimming at night with the set up is a bit like brail (low vis) diving since you only see florescence. Thus I found my self swimming with my hand in front of my head so I did not hit any rocks.
Two animals glowed very brightly; Hedgehog hydroid (Hydractinia milleri) and Aggregating Anenome(Anthopleura elegantissima). These two animals seem to fluoresce almost an order of magnitude brighter than anything else.
You can see all of my photos of here: underwater florescence photography in Cuyler Harbor, San Miguel Island, California.