lighting with UV "blacklight"?
Marginally on-topic, I've noticed that the Long Beach aquarium uses UV lighting for a lot of their animals, including their GPO. Although it makes some things stand out in a haunted-house-ride-at-disnyland sort of way, I don't like the unnatural look it gives (and it doesn't let me see the cool camo pics the way Carol's "Gimpy" pics showed recently). More directly, though, I would think it would be icky for the octopus; I'm sure octo eyes are good at the blue wavelengths, and probably can see further into the UV than humans, since many sea critters can... I'd expect the light to appear very bright to the octopus even though humans can only see the day-glow effect of stuff that flouresces under UV. I worry more, though, that all that UV could have a bad effect on the octo's skin... I guess if it hurt the octopus, they'd stop doing it, though...
Anyway, I was just curious... even if I get an octo tank eventually, the whole UV look is pretty unappealing to me, even if the octo doesn't actually mind...