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Topic: Baleen whale

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In the News (Mon 18 Jun 18)

  Baleen whale - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-08-19)
The distinguishing feature between this suborder and the toothed whales is that baleen whales have baleen plates instead of teeth in the upper jaw, which enables them to filter food from water.
Baleen whales are generally larger than toothed whales, and the females are larger of the two sexes.
In contrast to toothed whales, baleen whales are unlikely to echo-locate.
en.wikipedia.org /wiki/Baleen_whale   (540 words)

 Baleen - Wikipedia, the free encyclopedia
Baleen makes up baleen plates, which are arranged in two parallel rows that look like combs of thick hair; they are attached to the upper jaws of baleen whales.
Whales are the only vertebrate group to use this method of feeding in great abundance (Flamingos and crabeater seals use similar methods, but do not have baleen), and it has allowed them to grow to immense sizes.
Currently, baleen is believed to have evolved around thirty million years ago, possibly from a creature with a hard, gummy upper jaw, similar to that found on Dall's porpoise today, which are, at a microscopic level, almost identical to baleen.
en.wikipedia.org /wiki/Baleen   (553 words)

 Whale - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-08-19)
The baleen whales are characterized by the baleen, a sieve-like structure in the upper jaw made of keratin, which they use to filter plankton from the water.
Whales are broadly classed as predators, but their food ranges from microscopic plankton to very large fish.
It is certainly true that whales have a sophisticated social system, and that their communication system may contain some of the elements of true language, although our knowledge of whale communications is not very advanced.
www.knowledgehunter.info /wiki/Whales   (1537 words)

 World Almanac for Kids
One toothed whale, the sperm whale, sometimes known as a cachalot, is quite large: The male grows to a length of 18.3 m (60 ft), and the female grows to a length of 12.2 m (40 ft).
Baleen whales can hold their breath up to 50 minutes when diving, and sperm whales up to 75 minutes; sperm whales regularly dive to depths of 460 m (1500 ft) in search of their prey, the giant squid.
In captivity, whales and dolphins show considerable capacity for learning and a well-developed sense of play and of care giving; but because it is extremely difficult to observe cetaceans in their natural state, little is known of their social interaction and communication in the wild.
www.worldalmanacforkids.com /explore/animals/whale.html   (1906 words)

 Baleen, Alaska Science Forum   (Site not responding. Last check: 2007-08-19)
The 600 or so plates of baleen carried in the upper jaw of a bowhead whale were so valuable during the heyday of whaling that the take from a single whale could pay the expenses of an entire voyage, leaving all else for profit.
Baleen plates ranging in length up to ten feet are attached by one end to the upper jaw so that they hang down on either side of the whale's massive tongue.
To feed, the baleen whale swims with open mouth through swarms of small creatures known as water fleas or schools of somewhat larger shrimp-like crustacea--the small creatures baleen whale eat are collectively called krill.
www.gi.alaska.edu /ScienceForum/ASF2/235.html   (295 words)

Whales are the largest species of exclusively aquatic placental mammals, members of the order Cetacea, which also includes dolphins and porpoises.
Baleen whales have two; toothed whales have one.
The hunting of whales is the subject of one of the classics of the English language literary canon, Herman Melville's Moby-Dick.
www.reference.com /browse/wiki/Whale   (1590 words)

 Baleen Whales: Diet and Eating Habits
A baleen whale's skull shape, jaw size, and baleen plates determine the type of prey it catches and eats.
A baleen whale probably uses its tongue for moving food trapped inside the baleen, for squeezing water out of the mouth, and for swallowing.
Baleen whales' tongues are proportionally larger than toothed whales' tongues.
www.seaworld.org /infobooks/Baleen/dietbw.html   (722 words)

 Great Whales
Baleen whales do not have teeth—they have plates made of a material similar to human fingernails (baleen) that hang down from the roofs of their mouths.
This organ, found in the sperm whale's prominent forehead and apparently used as a lens to focus the loud clicks and other sounds the whale makes, is filled with an oil that humans once used to lubricate fine watch works and other intricate devices.
These whales are distinguished by their huge heads (which allow them to take in large mouthfuls of water without having to expand their throats), their very long baleens, their slow swimming speeds, and their lack of prominent dorsal fins.
www.hsus.org /marine_mammals/a_closer_look_at_marine_mammals/great_whales.html   (614 words)

 Baleen Whales
Whales that feed in the Antarctic travel north, and those that feed in the Arctic travel south, to warmer waters for breeding.
Baleen whales in the northern hemisphere are usually slightly smaller than those found in the southern hemisphere.
Baleen whales use their pectoral flippers (front) to steer and, with the help of the flukes, to stop.
www.kidcyber.com.au /topics/whale2.htm   (557 words)

 NEPTUNE'S WEB - Oceanography Lesson Plans for Physical Education; Baleen Whale Feeding   (Site not responding. Last check: 2007-08-19)
Baleen is made of a material similar to the protein found in human hair and fingernails.
The hula-hoop represents the entrance to the whale's stomach and is held by the 2 stomach students.
Set up the same whale with the students as before, except this time the baleen is open and out of the way of the mouth (like humans opening their mouths, teeth out of the way).
pao.cnmoc.navy.mil /educate/neptune/lesson/physed/feeding.htm   (721 words)

 ACS bowhead whale Cetacean Fact Sheet - American Cetacean Society
Bowhead whales have a high bridge (termed the "stack") on which sit the nostrils, and with this are able to smash through ice that is 1-2 feet thick to breathe, presumably as they visually follow long cracks and valleys we now know to mark the bottom of the ice.
As a baleen whale, it has a series 325-360 fringed overlapping plates of baleen hanging from each side of the upper jaw, just outside where teeth might otherwise be located.
Worldwide, bowhead whales are found in the western Arctic (Bering, Chukchi, and Beaufort Seas), the Canadian Arctic (Baffin Bay, Davis Strait, and Hudson Bay), the Okhotsk Sea (in Russia, between the mainland, the Kamchatka Peninsula, and the Kuril Islands), and Spitsbergen westward to Greenland in the far north Atlantic Ocean.
www.acsonline.org /factpack/bowhead.htm   (1289 words)

 The Marine Mammal Center
Baleen whales have two openings in the blowhole, tend to be larger and swim more slowly than toothed whales, and have small or no dorsal fins.
Baleen whales are divided into three groups based on their feeding strategies.
The rorquals, such as humpback and blue whales, feed by gulping a large mouthful of food and water and expanding the throat pleats that extend to their navel like a balloon.
www.marinemammalcenter.org /learning/education/whales/mystic.asp   (359 words)

 Baleen Whales   (Site not responding. Last check: 2007-08-19)
Baleen whales are the largest animals on earth, yet they feed on some of the smallest animals in the ocean.
Right whales were called the "right" whales to catch by early hunters because they are large, swim slowly, have long baleen plates, contain lots of oil, and float when killed.
Gray whales are gray in color and their skin is encrusted with barnacles and a unique species of small crustaceans known as "whale lice." They have 2-3 short throat grooves and instead of a dorsal fin they have a low dorsal hump followed by 6-12 "knuckles" or bumps.
nmml.afsc.noaa.gov /education/cetaceans/baleen1.htm   (356 words)

 Baleen whales - Enchanted Learning Software
Whales, the order Cetacea (from the Greek word "cetus" which means whale), is divided into the baleen whales and the toothed whales.
Baleen whales are larger than the toothed whales and have two blow holes.
Baleen is a sieve-like device made of keratin (the same substance that fingernails and hair are made of).
www.enchantedlearning.com /subjects/whales/classification/Baleen.shtml   (633 words)

 Whales and Dolphins
Whales like to feed in the cold oceans where there is an abundance of their favorite food.
The sperm whale was seriously hunted, but most toothed whale populations were not as devastated by whalers as the baleen whale populations.
Whale populations that produce so few young in a season can be quickly brought to the brink of extinction by heavy hunting pressure.
www.graysreef.nos.noaa.gov /tw/whales.html   (1530 words)

 Humpback Whale: Wildlife Notebook Series - Alaska Department of Fish and Game
The humpback whale (Megaptera novaeangliae) is the baleen whale most frequently seen swimming or feeding close to shore along the southern coast of Alaska.
Humpback whales that summer in the north Pacific are from three separate stocks which winter in Mexico, in Hawaii, and in the western Pacific near the Mariana, Bonin, and Ryukyu islands.
Whales that summer in Alaska are primarily from the Hawaii stock.
www.adfg.state.ak.us /pubs/notebook/marine/humpback.php   (853 words)

 Planet Diary Archive 2003 - Fauna - New Baleen Whale Species Found   (Site not responding. Last check: 2007-08-19)
Baleen whales include some of the largest animals on Earth despite feeding on some of the smallest organisms.
This is small compared to some other baleen whales such as the blue whale and humpback whale.
The blue whale, believed to be the largest animal that has ever lived on Earth, can reach lengths of up 100 feet (30 meters).
www.phschool.com /science/planetdiary/archive03/faun1120503.html   (253 words)

Whales can be grouped into those that have teeth and a single blowhole, and those that have two blowholes.
Baleen whales usually do not go as deep as toothed whales because their food is near the surface.
Also, the baleen whale takes in a lot of water which must be pressed out before it swallows the krill.
teacher.scholastic.com /lessonrepro/lessonplans/profbooks/whales.htm   (737 words)

 Grey Whale Physical Appearance   (Site not responding. Last check: 2007-08-19)
Baleen whales take their name from the bristly-fringed plates called baleen, which hang down on either side of the whale's jaw.
Whales use baleen to filter ocean water and catch small animals swimming through the water.
Gray Whales have the coarsest baleen of all whales with 130 to 180 baleen plates on each side of their jaw.
www.nceas.ucsb.edu /nceas-web/kids/mmp/grey_physical.htm   (203 words)

 WhaleTimes Fishin' for Facts - whales
Baleen whales eat plankton such as krill and small fish.
Many years ago, baleen whales were hunted for their blubber, baleen, meat and bones.
For those cultures, hunting whales and marine mammals is a part of their heritage -- and may be their only food source.
www.whaletimes.org /whales.htm   (565 words)

 ---Baleen whales   (Site not responding. Last check: 2007-08-19)
The Bryde's whale is the least hunted of the rorqual species, mainly because it inhabits tropical and subtropical waters that were closed to whaling operations, because other species had been depleted in the area.
The fin whale is dark gray to brown in colour, with flanks that lighten towards the belly.
The sei whale is probably the fastest swimmer among the baleen whales.
www.sarkanniemi.fi /oppimateriaali/eng_spe1.html   (2296 words)

 or baleen whales   (Site not responding. Last check: 2007-08-19)
Baleen Whales The main difference between toothed and baleen whales is that baleen whales have no teeth at all but instead have baleen plates they use for collecting food.
The smallest of the baleen whales is the Minke Whale Balaenoptera acutorostrata.
Baleen whales are generally found singly or in loose associations rather than in large groups or families.
www.thewebsiteofeverything.com /animals/mammals/Cetacea/Mysticeti.html   (344 words)

 ACS gray whale Cetacean Fact Sheet - American Cetacean Society
Eschrichtiidae, the gray whale is a mysticete, or baleen whale.
As a baleen whale, it has a series of 130-180 fringed overlapping plates hanging from each side of the upper jaw, where teeth might otherwise be located.
Orcas (killer whales) are a cause of gray whale deaths, and many gray whales have orca teeth scars on their flukes.
www.acsonline.org /factpack/graywhl.htm   (1040 words)

 Blue Whale
It belongs to a family of animals known as the rorquals and is termed a baleen whale.
The baby whale, or calf, is nursed by the mother for the first six to eight months of life and then is weaned but will often stay with the mother for at least a year.
Blue whales were once termed “sulfur bottom” by the earliest whalers because of micro-organisms and algae that grow on their underbellies, giving a yellowish appearance.
www.newzealandfauna.com /bluewhale.php   (483 words)

 WhaleTimes Fishin' for Facts~pygmy right whale
Baleen plates vary in length from a few centimeters to 68 to 70 cm (27 to 28 in) and can be up to 10 cm (4 in) wide.
The baleen is yellowish white or ivory with fl or brown outside edges.
The pygmy right whale is the smallest baleen whale and, considered by many, the rarest baleen whale.
www.whaletimes.org /pygrtwha.htm   (978 words)

 CRESLI's fin whale page
Fin whales (also know as finback whales) can reach lengths of over 80 feet and weights of more than 160,000 lbs in the northern hemisphere and over 85 feet and 170,000 lbs in the southern hemisphere and are distributed around the world except for the tropics, i.e., they have an antitropical distribution.
Fin whales feed on a wide array of prey species, depending upon availability, ranging from small schooling fish such as sand eels, herring and tinker mackerel, to crustaceans such as krill and copepods, to squid.
Although fin whales are relatively common and are believed to be the dominant cetacean species during all seasons in the US Exclusive Economic Zone, scientists don't have enough data to determine the fin whale's population trends.
www.cresli.org /cresli/cetacean/finwhale.html   (1233 words)

 NOAA News Online (Story 2094)
On March 13, 2003, a beach comber found a dead baleen whale on the shore of Carolina Beach near Wilmington, N.C. During studies of tissue samples collected, scientists determined that the animal most likely died from starvation as a result of line entanglement.
Scientists also determined that the whale is a member of the baleen whale family and has a unique genetic sequence only seen in one other whale.
Bryde’s whale is a baleen whale and is unique in having three longitudinal ridges on its head.
www.noaanews.noaa.gov /stories/s2094.htm   (748 words)

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