south asian river dolphin facts

Their unique side-swimming behavior also allows them to move in shallow water less than 12 inches/a foot deep. Laura Klappenbach, M.S., is a science writer specializing in ecology, biology, and wildlife.

It helps spread seeds and provides food for birds and insects. The very large Orca dolphin may also eat marine mammals such as seals or marine birds such as penguins. These dolphins are elusive and shy around people, so studying them has been difficult. Sorry, your blog cannot share posts by email. They’re mainly crepuscular, meaning most active at dawn and dusk. And while they're most commonly associated with oceans, dolphins—and porpoises—can actually be found in several major rivers on two continents. The trunk can can hold nearly 2 gallons of water. Their ear openings are small slits (located behind their eyes) which do not connect to the middle ear. They use their strong teeth to hold their prey, but then either swallow their prey whole tear it into small pieces. Asian elephants live in herds of around 8-12 individuals led by an older, more experienced female. Rapids and waterfalls between Bolivia and Brazil keep the two species from mingling and breeding, thus forming two independent lines of genetics.

Dolphins are one of the oldest creatures in the world along with some species of turtles, crocodiles and sharks. They have complex social structures and even exhibit mourning behavior over deceased companions. Ganges river dolphins once lived in the Ganges-Brahmaputra-Meghna and Karnaphuli-Sangu river systems of Nepal, India, and Bangladesh. It no longer occurs in the Indus River tributaries. Known locally as susu, which refers to the noise the dolphin is said to make when it breathes, this swimmer is essentially blind and can detect only the direction of light. At one point, this porpoise shared the waters with the Baiji dolphin—a species declared functionally extinct in 2006. Arboreal in nature, they spend most of their time in the trees. Only males of the Asian elephants have large, visible tusks. Whale, Dolphin, or Porpoise - Characteristics of Different Cetaceans, Differences Between Baleen and Toothed Whales, Homeschooling Resources for Learning About Dolphins, Cetaceans: Whales, Dolphins, and Porpoises, www.nationalgeographic.com/animals/mammals/group/dolphins/, www.fisheries.noaa.gov/dolphins-porpoises, M.S., Applied Ecology, Indiana University Bloomington, B.S., Biology and Chemistry, University of Illinois at Urbana-Champaign.

This development activity divides and isolates populations, significantly reducing its range. Their skin ranges from almost paper-thin to 1.5 inches thick and is generally smoother on Asian elephants than their African counterparts.

Known locally as the Bhulan, the Indus River dolphin now swims in the lower parts of the Indus River in Pakistan. It is imperative that while spreading the word about red pandas we emphasize conservation. The Ganges River Dolphin is a freshwater dolphin species that inhabit the muddy river waters of the Ganges, Brahmaputra, Meghna, Karnaphuli and Sangu Rivers systems, their tributaries, lakes, ponds and streams. Ganges river dolphins, Platanista gangetica gangetica, aka susus, measure 2.3-2.6 m in length with females typically larger than mal… South Asian River Dolphin Range Map (India, Bangladesh, Nepal & Pakistan) Dark Blue: Ganges River Dolphin Range Light Blue: Indus River Dolphin Range.

They have developed numerous adaptations that make them well suited for life in water including a streamlined body, flippers, blowholes and a layer of blubber for insulation.

They measure around 8 feet in length and weigh 150-200 pounds. Facts. The snout can reach 20% of the length of the body reaching a length of 8.3 inches (21 cm) on average.

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