in Florida's springs. North of the Porpoise Stadium, a penguin display and a shallow tank were added in the area of what would be known as Whitney Park. The shallow tank saw several functions held dolphins for a while and eventually became a sea lion display with shows added in the early 1980s. Even though the park was now billing itself as Marineland, the name Marine Studios would stick for some time and the "Studios Department" which managed most of the park would last until the end of 1987. Salt water for the tanks and oceanariums was brought in by sets of pipes that ran under the sand 50 feet out into the ocean. Two pump stations called "galleries" pumped the water from that pipe to a filtration plant. Then the sea water was circulated through the oceanariums and out into the Intracoastal. A dedicated team of pump crews maintained the system 24 hours a day, keeping a vigilant eye on water levels and pump operations. Water was treated by copper sulfate to help reduce algae growth with lab crews monitoring the amounts used. This method of treatment was of the groundbreaking discoveries by Marineland crews and scientists. Having the grandson of Leo Tolstoy involved in the project helped Marineland become a very fashionable destination in its early days, prompting writers Marjorie Kinnan Rawlings, John Dos Passos, and Ernest Hemingway to visit Moby Dick's Bar located there. Ms. Rawlings was married to Norton Baskin who at one time (1950s/early 1960s) was the operator and manager of the Dolphin Restaurant and the Moby Dick Lounge. The park's facilities were very popular with tourists and also used for filming numerous movies, including Creature from the Black Lagoon (1954) and Revenge of the Creature (1955). The first dolphin trainer in the world, Adolph Frohn, started training dolphins and developed "dolphin shows", which became an additional draw in the early 1950s as Marineland became one of Florida's major attractions, attracting over 900,000 visitors per year with peak attendance in the mid-1970s. Further expansion westward occurred at this time, including expansion of the "Sandpiper Snack Bar", with other additions including the Playport playground, the "Citrus Shop", the "Beachcomber Gift Shop", the "Shell Museum" and the "Aquarius 3D Theater". A few exhibits were added as well, moving the electric eel show to the west side of the park from the east, all of these reached by