Yes, Kangaroo Island is a popular day trip from Adelaide. Kangaroo Island is located just off the coast of South Australia and is home to a variety of wildlife, including kangaroos, seals and koalas. Visitors can take a scenic ferry ride from Cape Jervis to Penneshaw on Kangaroo Island. From there, you can explore the island's many attractions, including Flinders Chase National Park, Admirals Arch and Remarkable Rocks. It is recommended to spend at least one full day on the island to fully enjoy the beauty and wildlife.