Editing Commerson's dolphin (section)

===''Cephalorhynchus commersonii commersonii''===
[[File:Commerson Dolphin closer.jpg|left|thumb|Commerson's dolphins in the [[Strait of Magellan]]]]
The ''commersonii'' subspecies has a black head, [[dorsal fin]], and [[fluke (tail)|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&nbsp;m (5&nbsp;ft). A mature female caught off of southern [[Patagonia]], at 23&nbsp;kg (51&nbsp;lb) and 1.36&nbsp;m (4.5&nbsp;ft), may be the smallest adult cetacean on record.<ref>Wood, The Guinness Book of Animal Facts and Feats. Sterling Pub Co Inc. (1983), {{ISBN|978-0-85112-235-9}}</ref> Its appearance resembles that of a [[porpoise]], but its conspicuous [[Commerson's dolphin#Behaviour|behaviour]] is typical of a dolphin. The dorsal fin has a long, straight leading edge which ends in a curved tip. The trailing edge is typically [[wikt:concave|concave]], but not [[falcate]]. The fluke has a notch in the middle.

Sexes are easily distinguished by the different shape of the black blotch on the belly&nbsp;— it is shaped like a teardrop in males but is more rounded in females. Females reach breeding age at 6 to 9 years. Males reach sexual maturity at about the same age. Mating occurs in the spring and summer and calving occurs after a gestation period of 11 months during the spring and summer.<ref name=Righi/><ref>{{Cite journal |last1=Sakai |first1=Mai |last2=Morisaka |first2=Tadamichi |last3=Iwasaki |first3=Mari |last4=Yoshida |first4=Yayoi |last5=Wakabayashi |first5=Ikuo |last6=Seko |first6=Atsushi |last7=Kasamatsu |first7=Masahiko |last8=Kohshima |first8=Shiro |date=2013-07-04 |title=Mother–calf interactions and social behavior development in Commerson's dolphins (''Cephalorhynchus commersonii'') |journal=Journal of Ethology |volume=31 |issue=3 |pages=305–313 |doi=10.1007/s10164-013-0380-2 |s2cid=11054565 |issn=0289-0771|doi-access=free |hdl=2433/193101 |hdl-access=free }}</ref> The Commerson's dolphin has been known to live up to 18 years in the wild, while in captivity the oldest individual was at least 33 years old at the time of death.<ref>{{cite web |author=Pedicini, Sandra |date=February 1, 2016 |website=[[Orlando Sentinel]] |url=http://www.orlandosentinel.com/business/tourism/os-seaworld-commersons-dolphins-20160201-story.html |title=Unusual Commerson's dolphins' time at SeaWorld's Aquatica coming to a close}}</ref>