the mural A Vital and Vibrant Ocean for All, featuring a North Atlantic right whale, on the façade of the theatre. In 2009, the New Balance Foundation Marine Mammal Center opened on the rear of the aquarium. This open-air exhibit lets guests and passersby view the aquarium's California sea lions and northern fur seals. In 2010, the new Animal Care Center opened. The off-site facility, located in Quincy, has large tanks for holding animals during exhibit renovations, quarantining new arrivals, and rehabilitating rescued sea turtles. In 2011, the aquarium added an Australian Great Southern Reef exhibit, featuring leafy and weedy seadragons, to the Temperate Gallery and started its own captive breeding program for the species. In the last of $42 million in upgrades that started in 2007, the aquarium once again worked with Cambridge Seven Associates to make improvements to the Giant Ocean Tank, including an expanded coral reef, larger, acrylic viewing windows, and a more advanced lighting array. The Yawkey Coral Reef Center was also added to the viewing area at the top of the exhibit, which reopened in 2013. During the renovation, the Giant Ocean Tank's residents lived temporarily in the penguin habitat at the base of the exhibit, while the penguins were relocated to the Quincy Animal Care Center. In 2019, the aquarium replaced the original Indo-Pacific coral reef tank in the Tropical Gallery with a new, floor-to-ceiling exhibit with an artificial coral habitat based on the Phoenix Islands Protected Area, which the aquarium helped to establish. Leadership The current President and Chief Executive Officer of the aquarium is Vikki Spruill, who assumed the position on July 30, 2018. She serves in the role alongside Chief of Staff Kim Fontes and Chief People and Diversity Officer Lauren Hunter-Dyson. John Mandelman, Ph.D. heads the Anderson Cabot Center for Ocean Life. Exhibits Giant Ocean Tank Located in the center of the main building's open atrium, the principle feature of the aquarium is the Giant Ocean Tank, a cylindrical, exhibit simulating a Caribbean coral reef. The exhibit's permanent residents include Myrtle the green sea turtle, loggerhead sea turtles, and hundreds of colorful tropical fish, but reef-dwelling sharks, stingrays, and moray eels may also be present. Open and accessible for viewing at the top, the concrete tank is surrounded by a spiral walkway that allows guests to see into the exhibit from every angle through 67 acrylic windows. Marine Mammals The