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The snubfin dolphins (Orcaella) contain two of the 35 species of oceanic dolphins that make up the Cetacean family of Delphinidae. [5] The phylogenetic status of Orcaella has long been confused. Although the snubfin dolphins share similar external features with the Monodontidae (narwhal), [ 2 ] a genetic study conducted by Arnason and ...
As the name implies, they tend to be found in the open seas, unlike the river dolphins, although a few species such as the Irrawaddy dolphin are coastal or riverine. The Delphinidae are characterized by having distinct beaks (unlike the Phocoenidae), two or more fused cervical vertebrae and 20 or more pairs of teeth in their upper jaws.
The Australian snubfin dolphin (Orcaella heinsohni) is a dolphin found off the northern coasts of Australia. It closely resembles the Irrawaddy dolphin (of the same genus, Orcaella ) and was not described as a separate species until 2005.
A common bottlenose dolphin (Tursiops truncatus). A dolphin is an aquatic mammal in the clade Odontoceti (toothed whale).Dolphins belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
Iniidae is a family of river dolphins containing one living genus, Inia, and four extinct genera.The extant genus inhabits the river basins of South America, but the family formerly had a wider presence across the Atlantic Ocean.
This is a non-exhaustive list of known dolphinariums worldwide. Many of these places are more than just dolphinariums; the list includes themeparks, marine mammal parks, zoos or aquariums that may also have more than one species of dolphin.
Globicephalinae is a subfamily of oceanic dolphins that includes the pilot whales (Globicephala spp.), the pygmy killer whale (Feresa attenuata), the rough-toothed dolphin (Steno bredanensis), the false killer whale (Pseudorca crassidens), the melon-headed whale (Peponocephala electra), Risso's dolphin (Grampus griseus), and the snubfin dolphins (Orcaella spp.).
The species is known to be abundant along the western coasts of South America, ranging from Cape Horn (55°58’S) to Arica (18°28’S), with the northernmost record at 12°30’S near Pucusana (Peru). Although the southern right whale dolphin is considered abundant, only few confirmed records of the species in the Eastern South Pacific exist.