The South Carolina Aquarium, located in Charleston, South Carolina, opened on May 19, 2000, on the historic Charleston Harbor. It is home to more than ten thousand plants and animals including North American river otters, loggerhead sea turtles, alligators, great blue herons, hawks, owls, lined seahorses, jellyfish, pufferfish, green moray eels, horseshoe crabs, sea stars, pythons, and sharks. The largest exhibit in the Aquarium is the Great Ocean Tank, which extends from the first to the third floor of the Aquarium; it holds more than 385,000 US gallons (1,460,000 l) of water and contains more than seven hundred animals.