May National Geographic
Anyone else read the NG magazine this month? There is an interesting article on colour and light in coral reefs. There is a bit of info on the web site too. Interesting stuff, and great photos.
May National Geograpic
One interesting fact: apparently the Mantis shrimp can see 16 different light spectrums including UV and polarized. It has the most complex eyes of any animal.  No wonder they are so hard to catch when the come as hitchhikers  
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I retired and got a fixed income but it's broke.
Ed
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50 gallon FOWLR, 10 gallon sump.
130 gallon reef, 20 gallon sump, 10 gallon refugium.
10 gallon quarantine.
60 gallon winter tank for pond fish.
300 gallon pond with waterfall.
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