A 117,000-gallon artificial reef home to more than 4,000 tropical fish, three species of stingrays and three species of sharks. The front viewing convex window extends 25 feet by 12 feet and is one of the largest single pieces of curved acrylic in the United States. 24 hours. Interactive feeding shows are scheduled daily at 1:30 pm and 4:30 pm. Free. Silverton, 702.263.7777.