The Downtown Aquarium is an Association of Zoo and Aquarium facility that also has a full serice restaurant with a 150,000 gallon reef tank.  The Aquarium exhibits boasts 1.25 million gallons of saltwater and freshwater habitats from around the world.  One of the few Aquariums in the U.S.A. that allows the public to get immersed in their large tanks either through a scuba or snorkel program.  Also, one of the few Aquariums that is open at night.  The old Ocean Journey Aquarium was bought by Landry's in 2003 and after a multi-million dollar renovation and was reopened in July 2005.