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Common Dolphins Swimming in front of a displacement hull vessel

  • Uploaded by Extraett on Feb 24, 2014
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The common dolphin is the name given to two species (and possibly a third) of dolphin making up the genus to the mid-1990s, most taxonomists only recognised one species in this genus, the common dolphin Delphinus delphis. Modern cetologists usually recognise two species the short-beaked common dolphin, which retains the systematic name Delphinus delphis, and the long-beaked common dolphin Delphinus capensis. Some studies suggest a third species, the Arabian common dolphin (D. tropicalis), found in the Red Sea and Indian Ocean, can be characterized by an extremely long and thin common dolphin is not the dolphin of popular imagination despite its name; that distinction belongs to the bottlenose dolphin due to its widespread use in marine parks and its appearance in the television series Flipper. However, this dolphin was the most frequently represented in the art and literature of ancient Greece and characteristicsBoth common dolphin species are medium-sized; adults range between and m ( and ft) long, and can weigh between 80 and 235 kg (180 and 520 lb), although the range between 80 and 150 kg (180 and 330 lb) is more common. Males are generally longer and heavier. The color pattern on the body is unusual. The back is dark and the belly is white, while on each side is an hourglass pattern colored light grey, yellow, or gold in front and dirty grey in back. They have long, thin rostra with up to 50--60 small, sharp, interlocking teeth on each side of each specieSDespite the historic practice of lumping the entire Delphinus genus into a single species, these widely distributed dolphins exhibit a wide variety of sizes, shapes and colors. Indeed, over the past few decades, over 20 distinct species in the genus have been proposed. Scientists in California in the 1960s concluded there were two species the long-beaked and short-beaked. This analysis was essentially confirmed by a more in-depth genetic study in the 1990s. This study also suggested a third species (D. tropicalis, common name usually Arabian common dolphin), characterized by an extremely long and thin beak and found in the Red Sea and Indian Ocean, might be distinguished from the long-beaked species. The current standard taxonomic works recognize this as just a regional Credit: EdoddridgeLicense: CC BY-SA :Delphinus_Delphis_-_Common_Dolphin,

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