Complex sentence: Within the aquarium, encounter programs are offered to visitors, who for an additional fee can get close to the African penguins, touch and stand in the water with beluga whales, and feed and touch sting rays in a special pool.
Split into simpler sentences: Within the aquarium, encounter programs are offered to visitors for an additional fee. Through these programs, visitors can to get close to the African penguins, touch and stand in the water with beluga whales, and feed and touch sting rays in a special pool.