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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).
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.
The key distinguishing feature is the dolphin's coloration—a white to pale-yellow patch is found behind the dorsal fin on both sides of the body. [4] The white-sided dolphin's color variations are unique amongst the standard hues of white, grey, black and blue seen on other pelagic cetaceans. [4]
In southern right whale dolphins (Lissodelphis peronii), the white patch extends higher on the posterior flanks and head. Calves, which are born initially creamy-dark grey or brown, attain adult colouring by the age of one year. [7] The beak of northern right whale dolphins is short and well-defined, characterised by a straight mouthline.
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.
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 ...
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 ...
The dusky dolphin have a distinctive colouration that resembles the Pacific white-sided dolphin. Its pigmentation consists of a dark grey or black area around the dorsal fin and spine, light gray face and chest area, a blazed flank patch that is the same colour, and a white underside.