Aquatic exercise is an excellent alternative for people who may not otherwise be able to perform land-based exercise. The geriatric population, identified as people over the age of 65, commonly presents with persistent pain in many areas, which is frequently associated with complications of aging. One of the most common causes of knee pain in elderly individuals is osteoarthritis. Knee osteoarthritis is the most frequent source of functional limitation of any disease. Many aquatic exercise techniques may assist in rehabilitation to combat this condition and its associated pain. A few modalities include aqua cycling, aqua aerobics, functional weight-bearing exercises, and strength training. Patients who have participated in aquatic exercise sessions have seen remarkable differences in their overall health. Moreover, current research suggests that improvements seen post-aquatic exercise/therapy include, but are not limited to, decreased pain, improved mobility, increased quality of life, and improved mental health.