Now thought to be completely extinct, the yangtze river dolphin (lipotes vexillifer) or as we will refer to it, the baiji, is considered to be the first species of dolphin to be driven to extinction by humans the baiji population numbers were determined to be hovering around 400 in the 1980's, however by 1997 those numbers were decimated to. Previous editions of this list recognized two globally distributed species of common dolphins: the short-beaked common dolphin d delphis and the long-beaked common dolphin d capensis as proposed by heyning and perrin (1994. Species considered to be river-dolphins are the indian river-dolphin (indus and ganges river-dolphins), amazon river-dolphin (boto), yangtse river-dolphin (baiji), and the la plata dolphin click on the la plata dolphin species link to view information about them. This threat is accelerated by illegal fishing for another endangered species that lives in the vaquita habitat, the totoaba ─ a large species of fish sought after for its swim bladder, driven by demand from china where it is considered a delicacy with medicinal value. The protection of the irrawaddy dolphin is crucial for the overall health of the mekong river—home to an estimated 1,100 species of fish the irrawaddy dolphin is also regarded as a sacred animal by both khmer and lao people, and is an important source of income and jobs for communities involved in dolphin-watching ecotourism.
The baiji, or chinese river dolphin, was native only to china's yangtze river the baiji was declared functionally extinct in 2006 on december 12, 2006, biologists declared the baiji (chinese river dolphin) functionally extinct the international authority on endangered species (the iucn. This is a baiji the baiji is a kind of river dolphin from china the baiji is a critically endangered species most say the baiji is now extinct that means they're population is 0, like the. There are around 90 species of whales, dolphins and porpoises, known collectively as cetaceans from the enormous blue whale to the tiny vaquita and new zealand dolphin, you will find information and amazing facts about these incredible creatures in this species guide.
The baiji is a freshwater dolphin found only in the yangtze river in china nicknamed goddess of the yangtze in china, the dolphin is also called chinese river dolphin, yangtze river dolphin, whitefin dolphin and yangtze dolphin. In 2006, the yangtze river dolphin, or baiji, was declared functionally extinct when an intensive survey involving a team of thirty scientists failed to yield any results they looked for the species all over its natural habitat, right from the three gorges dam to the shanghai estuary, over a period of six weeks. Of the five species of river dolphins two, the baiji and the indus river dolphin, are in grave danger of extinction the baiji, which resides in the yangtze river in china, one of the most industrialized and polluted rivers in the world, is the most critically endangered cetacean. A team of the world's leading marine biologists is making a last-gasp search for the baiji, a dolphin that was revered as the goddess of asia's mightiest river but is now probably the planet's.
Endangered whales of the world the mammalian order cetacea contains more than 70 species of whales and dolphins most have been affected by human activities to some extent, and several have experienced profound population declines in the last century. River dolphin there are only four species of river dolphin still existing in river, lakes and estuaries in certain parts of the tropical southern hemisphere river dolphins are also known as freshwater dolphins with one species however inhabiting saltwater estuaries known as the la plata dolphin. Male baiji reach sizes of 23 m and 135 kg, and females reach 25 m and over 167 kg baiji, or chinese river dolphins, are predominantly bluish gray above and white to ashy-white below there are light brushings on the side of the face and the side of the tail stock.
The eastern taiwan strait (ets) indo-pacific humpback dolphin (sousa chinensis), also known as the chinese white dolphin, was listed as critically endangered by the international union for. The yangtze river dolphin, or baiji, was declared functionally extinct in 2006 after scientists failed to locate any remaining animals baiji once lived in the lower and middle reaches of the yangtze river, fuchun river, and in dongting and poyang lakes, china. The baiji dolphin is listed as critically endangered and may even be extinct, and a few other species are vulnerable or near threatened the main threats dolphins face include pollutants, boat collisions and accidental capture by fishing nets. A suspected new river dolphin species has emerged in brazil, and scientists warn that it is highly endangered river dolphins (also known as botos) are among the rarest, and most endangered.
In 1975, china declared the baiji a national treasure, and subject to more protection in 1996, the iucn rated baiji as one of the 12 most endangered species in the world. Hector's dolphins are classified as endangered by the international union for the conservation of nature, and one subspecies of these dolphins, the maui's dolphin is critically endangered as per world wide fund for nature estimates, 7,400 individuals of this species survive with the number of maui's subspecies being only around 55. Of all dolphins, four species resides only in river waters amazon river dolphin or boto the indus dolphin, baiji or chinese river dolphin and the ganges dolphin dolphins fancy feeding in habitats where prey densities are high and the water quality is good. The baiji (chinese: 白鱀豚 pinyin: báijìtún (help info), lipotes vexillifer, lipotes meaning left behind, vexillifer flag bearer) is a functionally extinct species of freshwater dolphin formerly found only in the yangtze river in china.
Conservationists at the zoological society of london surveyed 3200 km of the yangtze river in china, home of the unique baiji river dolphin, with hopes of saving the endangered species from extinction but alas, without a dorsal fin in sight, and no clicks or whistles on the hydrophone, the rare. Some dolphin species are at risk of extinction, especially some river dolphin species such as the amazon river dolphin, and the ganges and yangtze river dolphin, which are critically or seriously endangered. Regrettably, the international union for conservation of nature considers the baiji the most threatened cetacean (ie marine mammals commonly known as whales, dolphins and porpoises) in the world, and it is likely already extinct (iucn red list of threatened species, 2011.