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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 ...
The false killer whale (Pseudorca crassidens) is a species of oceanic dolphin that is the only extant representative of the genus Pseudorca. It is found in oceans worldwide but mainly in tropical regions. It was first described in 1846 as a species of porpoise based on a skull, which was revised when the first carcasses were observed in 1861.
The Australian snubfin dolphin is unusual among recently described mammals in that a population is accessible for scientific study. Nonetheless, the existence of snubfin dolphins in the waters of northern Australia had only become known to western scientists in 1948, when a skull was collected at Melville Bay (Gove Peninsula, Northern Territory).
Scientists found that members of the new species are smaller than their offshore common bottlenose counterparts, eat different fish and have spines adapted to navigating the tight spaces of rivers ...
In comparison to other dolphin species, the Atlantic spotted dolphin is medium-sized. Newborn calves are about 35–43 in (89–109 cm) long, while adults can reach a length of 2.26 m (7 ft 5 in) and a weight of 140 kg (310 lb) in males, and 2.29 m (7 ft 6 in) and 130 kg (290 lb) in females.
Atlantic spotted dolphin, Stenella frontalis; Pantropical spotted dolphin, Stenella attenuata; While the pantropical spotted dolphin can be found around the world's oceans where a tropical or subtropical climate exists, the Atlantic spotted dolphin can only be found in the Atlantic Ocean
The Atlantic humpback dolphin (Sousa teuszii) is among the poorest understood oceanic mammals.There is a lack of historical and present-day information about population size, habitats, ecology ...
According to a study in 1971, Peale's dolphin and the Cephalorhynchus species are the only dolphins that do not whistle (no acoustic data are available for the hourglass dolphin). Peale's dolphin also shares with several Cephalorhynchus species the possession of a distinct white "armpit" marking behind the pectoral fin.