Complex sentence: Visitors are also entertained with a daily walrus show that has two Pacific Walruses and one Atlantic Walrus, which the Aquarium claims to be the first and only institution of its kind to care for the two subspecies.
Split into simpler sentences: Visitors are also entertained with a daily walrus show that has two Pacific Walruses and one Atlantic Walrus. The Aquarium claims to be the first and only institution of its kind to care for the two subspecies.