Thanks all!
Harold... for some reason the jellies were always headed down for the shots I liked best... here's a a flipped shot of a bunch of spectators hanging by their feet
![Wink :wink:](./images/smilies/icon_wink.gif)
...
There are some tanks where flash is prohibited... the Leafy Sea Dragon and the Cuttlefish are in that group.
These were all taken "handheld" with the existing aquarium lighting. (Tripods are not permitted). You are allowed to use flash on the jellyfish... but you then lost the great "look" of the top light supplied in the display. Fortunately the venerable 5D does quite nicely at ISO 800 and 1600. (Although even then the shutter speeds were pretty slow).
I do love nice aquaria. Unfortunately the optical properties of some of the thick tank walls sometimes make for some seriously color fringed shots. The jellyfish tanks here were surprisingly good. This aquarium also has some very attractive displays in tanks with curved walls... they look great but you can't do much photographically with those subjects
![Crying or Very sad :cry:](./images/smilies/icon_cry.gif)
.