[en] Delphinidae: this is the largest family of cetaceans, with more than 30 species as members. Some taxonomists split it into up to three different families. Fifteen species are recorded from around India. In size the dolphin family ranges from the Black Dolphin Cephalorhynchus eutropia of Chile, which is about 1.6 m in length, to the Killer Whale Orcinus orca, which grows to 9.5 m (http://www.marinemammals.in/delphinidae)