Sea those fish.. 🐟🐟🐟
I was amazed when I saw this big tube-like-aquarium (I don't know how it's called. I just described it) while exploring the Ocean Park in Hong Kong. There are holes with different shapes (below is a triangle shaped hole) where you can take a peek of the aquarium.
And then you will see the whole of it when you just walk more the aisle (picture below).
(Photos taken last June 2015)