the Pacific and Atlantic Oceans, the Caribbean Sea, and the African Great Lakes. Lake Michigan Tank The Lake Michigan tanks is a 75,000-gallon cold freshwater tank in the center of the aquarium. Dozens of other tanks follow a path around the exhibit. This tank is home to Lake and Shovelnose Sturgeon, Largemouth Bass, White and Black Crappie, Paddlefish, Northern Pike, Walleye, Freshwater Drums, Bowfin, Spotted, Longnose, and Shortnose Gar, Bigmouth and Smallmouth Buffalo, Channel Catfish, White Bass, and Common Carp, all of which are native to the Great Lakes. Aquarists and interns conduct one cleaning dive a week to manually scrub algae and feed the fish. "L" Tanks The aquarists call these the "L" tanks due to their unconventional shape. These tanks occupy two levels, while tank glass penetrates the floor between these levels. This allows visitors to watch tank inhabitants swim beneath their feet. Great Lakes Comp Tank This is essentially a smaller, less diverse version of the Lake Michigan tank. This first of the two "L" tanks features Bluegill, Black Crappie, and Smallmouth Bass. North Atlantic Tank This North-Atlantic-simulating tank holds cold saltwater. This second "L" tank feature Striped Bass, Snowy Grouper, and Summer Flounder. Amazon Basin River Tank The freshwater Amazon Basin River system tank features a Silver Arowana, Bigtooth River Stingray, Blood Red Parrotfish, Black Ghost Knifefish, Jurupari, Marbled Angelfish and Motoro/Leopoldi hybrid Stingray. This large tank is placed in a corner from which an apron of glass extends out through the floor, allowing visitors to walk over and view tank inhabitants beneath their feet. Caribbean Tank This 65,000-gallon warm saltwater tank is the most colorful and active tank and is displayed via an upside down halfpipe design, which visitors can walk through. This tank is home to a Rooster Hogfish, a Sargassum Triggerfish, two Bamboo Sharks, Goatfish, French and Queen Angelfish, a Cownose Stingray, and a variety of Grunts, a Scrawled Filefish. Here, aquarists and interns also conduct one cleaning dive a week to scrub algae. Touch Tanks There are two touch tanks where visitors can have a hands-on interaction with some aquatic creatures. A cold freshwater touch tank features young Lake Sturgeon who, when large enough, will be relocated to the larger Lake Michigan tank to join a larger, more diverse environment more appropriate for an adult sturgeon. A much warmer saltwater touch tank features Atlantic Stingray and Cortez Round Stringray. Under employee supervision,