sorry, I completely missed your post Cat-Man. No, I actually did not see the dolphinarium at all and wasn't even aware there was one to be honest. Looking at the map it is in the centre of the zoo, sort of near the big waterbirds aviary. I skipped some sections due to the rain, although I tried to fit everything in, and apparently that section was one which got missed out!
Don't worry about it Thankyou for your response, and a greater thanks to your fantastic pictures of Asian Zoo's!