Ken Jones, a leading amateur microscopist, specialises in video-filming pond-life. One of his videos captures the enigmatic and graceful movement of Volvox, and he has kindly allowed us to show some extracts from his film on this page. A single Volvox colony spins through the dark waters of a pond. Daughter cells are just visible inside. Micscape Editor's note.
Heart, liver, or kidney disease. Sometimes swelling can indicate a problem such as heart, liver, or kidney disease. Ankles that swell in the evening could be a sign of retaining salt and water because of right-sided heart failure. Kidney disease can also cause foot and ankle swelling.
Quick Answer. Causes of swollen ankles or feet include congestive heart failure, pregnancy, injury to the ankle or foot, kidney disease and sitting or being on one's feet for a long time, according to WebMD. If the person's ankles swell in the evening, it could also be a sign the body is retaining salt.