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Some Irrawaddy dolphins kept in captivity have been trained to do spyhopping on command. The Irrawaddy dolphin is a slow swimmer, but swimming speeds of 20–25 kilometres per hour (12–16 mph) were reported when dolphins were being chased in a boat. [11]
The Irrawaddy dolphin shares similar physical characteristics with the beluga whale, but its genetic makeup ties the Irrawaddy dolphin and the killer whale as close relatives of one another. [13] Irrawaddy dolphins have a slate blue to a slate gray color and their bodies can grow up to 180-275 centimeters in length. [14]
It closely resembles the Irrawaddy dolphin (of the same genus, Orcaella) and was not described as a separate species until 2005. The closest relative to the genus Orcaella is the killer whale, Orcinus orca. [citation needed] The Australian snubfin has three colors on its skin, while the Irrawaddy dolphin only has two. The skull and the fins ...
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 ears of river dolphins have specific adaptations to their aquatic environment. In humans, the middle ear works as an impedance equalizer between the outside air's low impedance and the cochlear fluid's high impedance. In river dolphins, and other cetaceans, there is no great difference between the outer and inner environments.
It covers 200,115 hectares (494,490 acres) of both aquatic and terrestrial environment with diverse ecosystems consisting of mangroves, coral reefs and seagrass beds, and a variety flora and fauna endemic to Palawan. The sound is the only known habitat of Irrawaddy dolphins in the Philippines. [4]
Dolphins. The Irrawaddy dolphin (Orcaella brevirostris) is the flagship species of Chilika lake. Chilka is home to the only known population of Irrawaddy dolphins in India [16] and one of only two lagoons in the world that are home to this species. [12] It is classified as Critically Endangered, in five of the six other places it is known to ...
However, capturing the rare, quick dolphins proved to be difficult, and few captives survived more than a few months. [2] The first Chinese aquatic species protection organisation, the Baiji Dolphin Conservation Foundation of Wuhan (武汉白鱀豚保护基金), was founded in December 1996.