Take a sea voyage on the Backstairs Passage from spectacular Cape Jervis to this sailing shipwreck island - home to the wallaby, goanna, echidna, koala, and kangaroo. Kangaroo Island is a haven for marine wildlife and seabirds. Walk in the wild with seals on the beach. Kangaroo Island: so natural, so unique with dramatic pockets of unspoiled wilderness. This is indeed nature's treasure island.