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Bottlenose dolphin is perhaps one of the most commonly known dolphins among the 76 cetacean species. The name of this species comes about due to its relatively robust body with a usually short and stubby beak.
Bottlenose dolphins are found worldwide in temperate and tropical waters. They are frequently seen in harbors, bays, lagoons, estuaries and river mouths. They are protected in the U.S. waters by the Marine Mammal Protection Act…

Also known as the Chinese White dolphin, the young is usually born in varying shades of light black to dark grey and fades to a pink or white color as it matures. There seems to be two population types. Those found in the west have a fatty hump which the dorsal fin sits on, while those in the east don't have a hump and they can sometimes get confused with bottlenose dolphins. The most well-known of this species probably lives off the coast of Hong Kong…

Although most closely related to the orca, the Irrawaddy dolphin is similar in body form to the beluga whale, but darker in color, with a dark to pale grey. The mobile head of the Irrawaddy dolphin is broadly rounded and there is no distinct beak. The dorsal fin is small, triangular and rounded, and the flippers are long and broad. Irrawaddy dolphin can be found near coasts and in estuaries in parts of south-east Asia…

Finless porpoise also resembles the beluga in a way that a dorsal fin is lacking and both have no apparent beak. The color pattern is uniformly dark to pale grey and somewhat lighter on the ventral side. It is one of the smallest whale/dolphin in the world. Any hunting or catching of Finless porpoise is prohibited as it is protected by law. It has also been listed in the Red Data Book (RDB) in Japan, and in Nagasaki Prefecture’s 2001 Red Data Book, it has been listed as “endangered species”…