This is pearl bubble coral, Physogyra sp, a captive raised tropical coral. The first picture shows irregularly shaped polyps. The second picture is a close-up of "sweeper tentacles" the coral uses for catching food and as a defense mechanism.
Nikon D50 with 100mm/3.5 Vivitar macro and built-in flash
Nikon D50 with 50mm/1.4 Nikon lens reverse mounted and built-in flash
Pearl Bubble Coral
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Here is some good news (in itself a great rarity) for rare corals:
http://www.sciencedaily.com:80/releases ... 094006.htm
Harold
http://www.sciencedaily.com:80/releases ... 094006.htm
Harold
My images are a medium for sharing some of my experiences: they are not me.