Most famous for its sponge divers which leaving for weeks at a time, still work the sponge beds off the south coast of Crete and elsewhere.
Though smallish, Kalymnos has many things to offer the visitor including: hiking, caving, hot springs and several nice beaches.
The island boasts a wonderful port with traditional Limani and its here that you'll find most tourism related stores and amenities. There is a walled citadel up the hill behind the port and the island has a good traditional music scene to help while away the evenings to boot!
Although mountainous there are 2 valleys with greenery, citrus groves and dotted along the coast are several fishing villages where the fish is fresh and reasonably priced.