Hi guys:
I am a new member to the site, but have been peeking over the past years thanks to Screamscape.
I just came back from Hong Kong myself and spent a few hours at Ocean Park on the 26th of December. The park has an amazing setting--loved the views of the ocean and surrounding islands. Plus, their atoll reef aquarium had some curiously strange fish.
Did you get a chance to take the train to Shenzhen in China? They have a couple of parks there as well. Have fun!