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April 5, 2017

WolfmanSF/Wikimedia Commons/Public Domain, Christin Khan/Wikimedia Commons/Public Domain, North Atlantic Right Whale: Eubalaena Glacialis, Southern Right Whale: Eubalaena Australis, Michaël CATANZARITI/Wikimedia Commons/Public Domain, North Pacific Right Whale: Eubalaena Japonica, John Durban/Wikimedia Commons/Public Domain, Common Minke Whale: Balaenoptera Acutorostrata, Antarctic Minke Whale: Balaenoptera Bonaerensis, Robert Pittman/Wikimedia Commons/Public Domain, Greg5030//Wikimedia Commons/Creative Commons 3.0, Facts About Mysticetes - the Baleen Whales, Cetaceans: Whales, Dolphins, and Porpoises, Differences Between Baleen and Toothed Whales, 10 Facts You Should Know About Whales, Dolphins, and Porpoises. Orca or Killer Whale. Bowheads are still hunted by native whalers in the Arctic. There are many conservation efforts in place for both types of whales. La Plata dolphins are exclusively marine organisms, however, they are grouped with river-dolphins due to the fact that they reside in the La Plata River which is a salt-water estuary. The population of beluga whales in Cook Inlet, Alaska, is listed as endangered, but other populations aren't listed. The Platanistidae were originally thought to hold only one species (the South Asian river dolphin), but, based on differences in skull structure, vertebrae and lipid composition, it was split into two separate species in the early 1970s. The water is removed from it and they swallow the food. The baleen plates are long making it possible to float near the water surface. It has been replaced by other materials that work well and are inexpensive. Their propensity for staying close to shore places them in great danger from fishing, There are no quantitative data on abundance, Nothing is known of the abundance of this porpoise. All, or almost all, the cervical vertebrae are unfused, allowing their heads to be turned independently of their bodies. [11], The dwarf and pygmy sperm whales resemble sperm whales, but are far smaller. As the tools that fishermen had become more advanced they were able to take them down with less of a battle. Their skin is a beautiful gray-blue color, often with a mottling of light spots. If you are very interested in whales you should explore these areas as well. They are distinct from dolphins, although the word "porpoise" has been used to refer to any small dolphin, especially by sailors and fishermen. Six genera have been identified. There are nearly 90 species of whales, dolphins, and porpoises in the order Cetacea, which is divided into two suborders, the Odontocetes, or toothed whales, and the Mysticetes, or toothless baleen whales. What Is the Delphinidae Family of Animals? M.S., Resource Administration and Management, University of New Hampshire, B.S., Natural Resources, Cornell University. [7] Smaller cetaceans are at risk of accidentally getting caught by fishing vessels using, namely, seine fishing, drift netting, or gill netting operations.[8]. Blue whale – Sibbald’s rorqual – Great nothern roqual (Balaenoptera musculus) (This whale is part of the roqual family)Antarctic blue whale (Balaenoptera musculus)Pygmy blue whale (Balaenoptera musculus brevicauda)Bowhead whale – Greenland right whale (Balaena mysticetus)Bryde’s whale (Balaenoptera brydei) (This whale is part of the roqual family) (Named after Johan Byrde)Pygmy Byrde’s whale (Balaenoptera edeni)Fin whale – Razorback – Finback – Herring whale – Finner (Balaenoptera physalus… The following is a list of currently-existing, or in the jargon of taxonomy, 'extant' species of the infraorder cetacea (for extinct cetacean species, see the list of extinct cetaceans). The two parvorders of whales, baleen whales (Mysticeti) and toothed whales(Odontoceti), are thought to have spli… The reason for this behavior is unknown, but it's one of many fascinating humpback whale facts. The Toothed Whales were often hunted for the thrill of the challenge that they presented. Kate Stafford/Wikimedia Commons/CC BY 2.0 The bowhead whale got its name from its... Omura's Whale: Balaenoptera Omurai. The Bryde's (pronounced "broodus") whale is named for Johan Bryde, who built the first whaling stations in South Africa. Brocken Inaglory/Wikimedia Commons/CC BY 3.0. Toothed Whales can also hit boats which make them more dangerous. The baleen whales, also called whalebone whales or great whales, form the parvorder Mysticeti. A toothed whale, it finds its prey using echolocation. [11], The Monodontidae lack dorsal fins, which have been replaced by tough, fibrous ridges just behind the midpoints of their bodies and are probably an adaptation to swimming under ice, as both do in their Arctic habitat. 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. Salvatore Cerchio/Wikimedia Commons/CC BY 4.0. [25], Family Kogiidae: dwarf and pygmy sperm whales, Superfamily Platanistoidea: river dolphins, Family Platanistidae: South Asian river dolphin, As of August 2018, the Arabian common dolphin is considered a subspecies of the common dolphin by the, The total population is unknown but numbers in the hundreds of thousands, The only population estimate is of 38,900 individuals in the eastern tropical Pacific Ocean, Total population is not known. There are 150,000 individuals in the eastern tropical Pacific Ocean. Baleen whales are characterized by having baleen plates for filter feeding and two blowholes. There are plenty of species of Baleen Whales and Toothed Whales that you will find to be extremely interesting. They have a small geographic range and are mainly found in the waters along the east coast of South America. It was known as the "right" whale for whalers to hunt because of its slow speed, tendency to float when killed, and thick blubber layer. The pygmy sperm whale reaches average lengths of 10 feet and weighs about 900 pounds. [24] However, these were demoted to subspecies in 1988. There is sufficient evidence to suggest that both Baleen Whales and Toothed Whales were once land animals. Pilleri, G., Marcuzzi, G. and Pilleri, O., 1982. Several species have only been described in the last two decades. Minke whales are small but still 20 to 30 feet long. All 90 species of whales and dolphins can be divided into two categories: baleen whales and toothed whales. Inwater Research Group/Wikimedia Commons/CC BY 4.0. [11], River dolphins are the five cetaceans which reside in freshwater rivers and estuaries. The list is organized taxonomically into parvorders, superfamilies when applicable, families, subfamilies when applicable, genus, and then species. The most obvious visible differences between the two groups are that porpoises have a less pronounced beak, and have spade-shaped teeth as opposed to conical.[18]. With their beautiful black-and-white coloration, orcas, also called killer whales, have an unmistakable appearance. Gabriel Barathieu/Wikimedia Commons/CC BY 2.0. Fin whales are a streamlined baleen whale and the only animal known to be asymmetrically colored, as they have a white patch on their lower jaw only on the right side. DNA evidence suggests it separated from oceanic dolphins about 25 million years ago.

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