River dolphins are a polyphyletic group of fully aquatic mammals that reside exclusively in freshwater or brackish water. They are an informal grouping of dolphins, which itself is a paraphyletic group within the infraorder Cetacea. Extant river dolphins are placed in two superfamilies, Platanistoidea and Inioidea.

river dolphin, any of six species of small, usually freshwater aquatic mammals that are related to whales (order Cetacea). These dolphins are found in rivers of south-central Asia, China, and South America and in the coastal waters of Brazil, Argentina, and Uruguay.

2022年5月10日 · River dolphins are among the most seriously endangered of all dolphins because they live in freshwater river systems, where space is far more limited than oceanic waters; and they live beside millions of people who compete for the same natural resources.

2022年4月14日 · Swimming through rivers in parts of South America and Asia is what one might consider an unexpected figure: the dolphin. It joins the ranks of the shark and the sea turtle as some of the oldest creatures on Earth.

Discover why river dolphins are important, how they differ from marine dolphins, what the differences between the species are, what echolocation is, and why river dolphins and people depend on each other.

River dolphins make their homes in some of the greatest rivers on the planet, sometimes navigating long distances between feeding and breeding areas with the seasonal shifts linked to water levels.

2023年5月18日 · Many species of river dolphins, specifically, live in waterways spanning multiple continents and countries around the globe. Their unique habitats correlate with strange attributes and extraordinary behaviors not found in marine dolphins and other cetaceans.

River dolphins are five species of dolphin which live in fresh water rivers and estuaries. Three species live in fresh water rivers. The La Plata Dolphin lives in salt water estuaries and the ocean. Indus river dolphin, Platanista indicus minor – Lives in Pakistan; National mammal of Pakistan.

The Amazon river dolphin, also known as the pink river dolphin or boto, lives only in freshwater. It is found throughout much of the Amazon and Orinoco river basins in Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela.

Check our videos on the river dolphin species and download our briefs and publications to learn more about these amazing dolphins and their freshwater habitats!