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The humpback dolphin is a coastal species found from Africa and India south to Australia, with variations in different regions. It has a distinctive hump in front of its dorsal fin and a keel on its belly. The dorsal fin is somewhat curved. Its pectoral fins are relatively small, and the tail flukes have a noticeable notch in the middle.
The shape, size, position and colour of the dorsal fin varies with the type of billfish, and can be a simple way to identify a billfish species. For example, the white marlin has a dorsal fin with a curved front edge and is covered with black spots. [4] The huge dorsal fin, or sail, of the sailfish is kept retracted most of the time. Sailfish ...
Males, in particular, can have distinct humps under their dorsal fins. [3] They can also be distinguished by a robust body with a well-defined rostrum. They are typically slate gray on the back and sides, fading to light gray ventrally. The dorsal fin is small, slightly falcate, and triangular, and sits on a distinctive and well developed ...
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The dorsal fin is short, triangular in shape, and lacks the dorsal "hump" typical of Atlantic and Indian humpback dolphins. The body is mainly dark gray in color, with flanks shading to the light gray. A diagonal cape line extending from just above the eye and neck down to the urogenital area separates the dark back and lighter belly. White ...
Other than being known for her Broadway-caliber behavior, the juvenile whale was also the easiest to spot because of its distinctive scarring along its dorsal fin — a harbinger of the mammal’s ...
Naso brachycentron has 4 or 5 spines and between 28 and 30 soft rays supporting the dorsal fin while the anal fin is supported by 2 spines and 27 or 28 soft rays. The depth of the body fits into its standard length between 2.2 and 2.7 times. In fish with a standard length greater than about 20 cm (7.9 in) a hump begins to develop in the back so ...
The Indian Ocean humpback dolphin is a medium-sized dolphin that ranges in length from 2 to 2.8 metres (6.6 to 9.2 ft) and in weight from 150 to 200 kilograms (330 to 440 lb). [8] They have a fatty hump on the back, which differentiates them from S. chinensis which have a more prominent dorsal fin, but no hump. [8]