Well good for you. There are plenty(nearly too much) of aquariums here, 1 good one for marine fish and inverts is Reborn aquarium and supplier. Its pretty run down and looks small from front, but when you go in, youll see how big it is.

If youre looking for cephs, go to reborn on wednesdays at around 6pm they should have a few cuttles(about five) and octos(about 10).
Theres another place called Sealife aquarium. I have never been there but L S said he/she bought her/his nautilus there and that they have cuttles too. You should ask L S too.
The Underwater world is nice, However the only cephs the have are cuttle(quite large and look just like Colin's). They had blue rings and other octos some time ago but when i went last week they were gone
Well if you wanna know more just PM me or L S