The Monterey Bay Aquarium (MBA) was founded in 1984 and is located on the site of a former sardine cannery on Cannery Row of the Pacific Ocean shoreline in Monterey, California. It has an annual attendance of 1.8 million visitors. It holds thousands of plants and animals, representing 623 separate named species on display. The aquarium benefits by a high circulation of fresh ocean water which is obtained through pipes which pump it in continuously from Monterey Bay.
The centerpiece of the Ocean's Edge Wing, is a 10 meter (33-foot) high 333,000-US-gallon (1,260,000 l; 277,000 imp gal) tank for viewing California coastal marine life. In this tank, the aquarium was the first in the world to grow live California Giant Kelp. Visitors are able to inspect the creatures of the kelp forest at several levels in the building. The largest tank in the aquarium is a 1,200,000-US-gallon (4,500,000 l; 1,000,000 imp gal) tank in the Open Sea galleries (formerly the Outer Bay), which features one of the world's largest single-paned windows. It is one of the few aquariums to hold the Ocean Sunfish (Mola mola) in captivity.
Sealife on exhibit includes stingrays, jellyfish, sea otters, and numerous other native marine species, which can be viewed above and below the waterline. The Monterey Bay Aquarium is one of very few in the world to exhibit both bluefin and yellowfin tuna. For displaying jellyfish, it uses a Kreisel tank, which creates a circular flow to support and suspend the jellies. The aquarium does not house mammals other than otters.