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Latest Cetaceans Stories

Deepwater Horizon Spill Left Behind Sick Dolphins
2012-03-28 11:29:01

NOAA marine mammal biologists are reporting signs of poor health in bottlenose dolphins in the Gulf Coast. The dolphins, located in Barataria Bay, may be experiencing poor health due to exposure from the Deepwater Horizon oil spill of 2010. NOAA biologists took comprehensive physicals of 32 live dolphins from Barataria Bay in the summer of 2011 and found many troubling health concerns, such as anemia, low blood sugar, and low weight. The biologists also found more than half of the...

Image 1 - Ancient Whales Tell The Story Of Their Modern Relatives
2012-03-23 11:09:33

Smithsonian scientists have recently described a new species of toothed whale that once lived in warm climates during the Pliocene era 3-4 million years ago. These whales may have possibly been a close relative to the modern day Beluga and Narwhal. Those happy looking whales, the Beluga and Narwhal, live exclusively in colder climates like the Arctic and sub-arctic. The challenge now for the scientists is to uncover the mystery of why the whales moved farther north when once they were...

science-032312-005
2012-03-23 07:01:22

In the dark world of the underwater ocean, whales need to locate their prey accurately and quickly. In low-vision conditions whales use echolocation to find fish swimming nearby, and now it has been discovered that they can focus their acoustical “vision” to accurately located slightly differing objects. For this study, Laura Kloepper from the University of Hawaii and her her PhD supervisor, Paul Nachtigall, utilized the help of Kina the False Killer Whale, a species related to...

2012-03-22 11:10:01

False killer whales focus echolocation clicks Hunting in the ocean's murky depths, vision is of little use, so toothed whales and dolphins (odontocetes) rely on echolocation to locate tasty morsels with incredible precision. Laura Kloepper from the University of Hawaii, USA, explains that odontocetes produce their distinctive echolocation clicks in nasal structures in the forehead and broadcast them through a fat-filled acoustic lens, called the melon. 'Studies by other people showed...

Increase In Arctic Shipping Poses Risk To Marine Mammals
2012-03-19 04:00:16

A rapid increase in shipping in the formerly ice-choked waterways of the Arctic poses a significant increase in risk to the region's marine mammals and the local communities that rely on them for food security and cultural identity, according to an Alaska Native groups and the Wildlife Conservation Society who convened at a recent workshop. The workshop–which ran from March 12-14–examined the potential impacts to the region's wildlife and highlighted priorities for future...

Endangered Antarctic Blue Whales Show Surprising Genetic Diversity
2012-03-09 03:30:09

More than 99 percent of Antarctic blue whales were killed by commercial whalers during the 20th century, but the first circumpolar genetic study of these critically endangered whales has found a surprisingly high level of diversity among the surviving population of some 2,200 individuals. That, says lead author Angela Sremba of Oregon State University, may bode well for their future recovery. Results of the study have just been published in the open-access journal, PLoS ONE. As part of...

2012-03-08 13:08:00

WASHINGTON, March 8, 2012 /PRNewswire-USNewswire/ -- Internet giant Amazon.com has now officially banned the sale of all whale and dolphin products from its wholly owned Japanese website, following global outrage that these products were offered for sale. Amazon confirmed the prohibition on its main website by adding language under the Food and Beverage section that prohibits "Products containing shark, whale, or dolphin" and Amazon's Japanese website contains a similar ban on...

2012-03-02 12:27:03

Blue whale vocal behavior is affected by man-made noise, even when that noise does not overlap the frequencies the whales use for communication, according to new research published Feb. 29 in the open access journal PLoS ONE. The whales were less likely to emit calls when mid-frequency sonar was present, but were more likely to do so when ship sounds were nearby, the researchers report. The study was conducted in the Pacific Ocean off the coast of Southern California by Mariana Melcon and...

Unique Whistles Allow Dolphins To Greet Each Other
2012-03-01 05:45:52

Marine biologists have discovered that bottlenose dolphins use whistles to greet other members of their species. The researchers in Scotland said they made recordings of dolphins swimming in St. Andrews Bay in the summers of 2003 and 2004 by using hydrophones. They said when the group of dolphins met up, they swapped whistles that outwardly sounded the same. "The whistle exchange is more of a greeting ceremony that communicates a friendly intention and is perhaps not needed to...


Latest Cetaceans Reference Libraries

Cetology
2013-10-02 11:21:29

Cetology is a branch of marine mammal science that studies about eighty species of dolphins, whales, and porpoise, all of which are classified within the Cetacea order. Cetologists, who practice cetology, work to understand the distribution, development, behavior, and other aspects of cetaceans. The study of cetaceans began in the Classical era. About 2,300 years ago, Aristotle documented details about some cetacean species, calling them mammals, while traveling on the Aegean Sea with...

North Atlantic Right Whale, Eubalaena glacialis
2013-08-26 11:17:56

The North Atlantic right whale (Eubalaena glacialis), also known as the black right whale or the northern right whale, is one of three right whales in the Eubalaena genus. It can be found in a small population of about 396 individuals in the western North Atlantic. If it does occur in the eastern North Atlantic, experts assert that it only numbers in the tens, making it nearly extinct in that area. This species migrates into the western North Atlantic to feed in the spring, summer, and fall...

Southern Right Whale, Eubalaena australis
2013-06-22 16:13:36

The southern right whale (Eubalaena australis) is a species of baleen whale that can be found in different regions in the summer and winter seasons. During the summer, it can be found in the Southern Ocean, possibly near Antarctica. During the winter, populations disperse into many warmer areas to breed, including waters near Chile, Argentina, New Zealand, South Africa, Peru, Namibia, Brazil, Australia, and Madagascar, among other areas. Right whales were first classified by Carolus...

Pygmy Killer Whale, Feresa Attenuata
2013-01-30 15:25:51

Image Caption: Fossil of Feresa Attenuata, Shimonoseki Marine Science Museum KAIKYOUKAN, Japan. Credit: OpenCage/Wikipedia (CC BY-SA 2.5) The pygmy killer whale is widely distributed in tropical and sub-tropical waters worldwide. Regular sightings of this species occur off the coast of Hawaii and Japan, and also in the Indian Ocean near Sri Lanka and Lesser Antilles. In the Atlantic the pygmy killer whale has been seen off the coast of South Carolina and Senegal. This species swims in...

Crabeater Seal, Lobodon carcinophagus
2012-06-26 14:40:11

The crabeater seal (Lobodon carcinophagus) is a true seal that can be found around the whole of Antarctica. Its range also includes small areas in South America, New Zealand, Africa, and Australia. It resides on the pack ice zone for the entire year, even as it shifts seasonally, and prefers to stay in the continental shelf area in water with a depth of less than 1,968 feet. Because the populations are so wide spread and are sufficiently mixed, there have been no subspecies found. Because...

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