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The common dolphin (Delphinus delphis) is the most abundant cetacean in the world, with a global population of about six million. [3] Despite this fact and its vernacular name, the common dolphin is not thought of as the archetypal dolphin, with that distinction belonging to the bottlenose dolphin due to its popular appearances in aquaria and the media.
Commerson's dolphins in the Strait of Magellan. The commersonii subspecies has a black head, dorsal fin, and fluke, with a white throat and body. The demarcation between the two colours is very clear-cut. This stocky creature is one of the smallest of all cetaceans, growing to around 1.5 m (5 ft).
An Atlantic white-sided dolphin off the coast of Cape Ann, Massachusetts. The Atlantic white-sided dolphin is a small delphinid. At birth, calves measure just over a meter long; adult males grow to about 2.8 m (9.2 ft), and females to about 2.5 m (8.2 ft), [3] weighing between 180–230 kg (400- 510 lb) once fully grown. [3]
A Pacific white-sided dolphin flips out of the water in the Cordell Bank National Marine Sanctuary off California. These dolphins keep close company. [17] White-sided dolphins swim in groups of 10 to 100, and can often be seen bow-riding and doing somersaults. [6] [18] Members form a close-knit group and will often care for a sick or injured ...
Hector's dolphins are known to live to at least 22 years old, based on photo-based capture-recapture records last updated in 2006, [25] and become sexually mature at around six to eight years of age, [6] after which they produce one calf every two to four years. [25] Very little is known about the Māui dolphin's reproductive physiology.
The northern right whale dolphin is the only dolphin in the Pacific with this property. Similarly, the Southern is the only finless dolphin in the southern hemisphere. The two species can be readily distinguished (apart from the geographical separation in their ranges) by the extent of the whiteness on the body.
A mega-pod of dolphins put on a special show when it appeared next to Evan Donadt's San Diego whale watching boat. While passengers were hoping to spot a blue whale during the height of the whale ...
Heaviside's are small and stocky with adults reaching a maximum length and weight of 1.7 m (5.6 ft) and 75 kg (165 lb) respectively. [9] The dolphin has a distinct black, grey and white body pattern, and is not easily confused with any other species in its range. [4] The head is cone shaped with a blunt beak.