Critters!

From an exhibit at the San Francisco, where you could walk through a large open-air cage, and even feed the parakeets from small cups of sugar-water; they'd perch right on your arm/hand.

From the fantastic aquarium in Monterey, CA... all the marine life you could imagine. I tried taking a few photos through glass (obviously, without the flash), and this one came out decently. Yes. It's a fish.