opacity: skyline from the Shedd
opacity: wide-open
opacity: stripey
opacity: starfish arm
opacity: head-to-head
opacity: line of glasses
opacity: surfacing
opacity: eye contact
opacity: spotted, waiting in line
opacity: looking at the fishes
opacity: sploosh
opacity: dolphin belly up
opacity: tails up
opacity: trio
opacity: trio down
opacity: peeking up
opacity: Dewar's tasting
opacity: Dewar's tasting, with technology
opacity: explaining
opacity: retreating seadragons
opacity: crowding starfish
opacity: blue tongue
opacity: three in a row
opacity: training
opacity: backstroke
opacity: curiosity
opacity: unicorny fish
opacity: eel
opacity: abstract water surface
opacity: posing