An amphibious shoe has a sole with a fin compartment integrated therein retractably houses of a lightweight fin that converts the shoe from a walking shoe to a swimming shoe. The amphibious shoe includes a fin comprising ridges intermittent between material arranged in an accordion construction. The fin is capable of being ejected from the compartment and expanded to a fan configuration. The shoe is further provided with a pivotal stabilizing strap for enhanced stability during swimming. In one embodiment the fin is removed by a release button in communication with a spring. Other embodiments provide for manual deployment by pulling on the fin from the fin compartment. In operation, the wearer can comfortably run or walk swiftly along the land as the integrated fin has a thin lightweight construction. Upon reaching the water's edge, the shoe is readily converted for swimming by ejecting and positioning the fin.