Yes... the one thing Halifax desperately needs to waste money on is an aquarium to house their own version of Shamu.
Aquariums, particularly ones that will draw tourists are very expensive endeavors, both to build and maintain.
There are so many things that will benefit the greater good of both the city and the province far above an aquarium.
Things like some form of commuter rail and a stadium for two examples.
That said, perhaps a small aquarium featuring local species could be tacked onto an existing facility, like maybe the Museum of the Atlantic or even better, stick it in that underused tourist building by "The Wave" sculpture. Maybe then the bathrooms will be clean and not look filthy and smell like a hobo's armpit. They are thoroughly disgusting and an awful image for tourists who use them.