Killer whales have to raise their voices to be heard over ship noise

October 7th, 2009 Feds give sea otters habitat protection in AlaskaANCHORAGE, Alaska — Four years after being placed on the Endangered Species List, the dwindling sea otters of southwest Alaska on Wednesday were given an important recovery tool. The U.S. Fish and Wildlife Service designated nearly 5,900 square miles as critical habitat for sea otters in the Aleutian Islands, Bering Sea and Alaska Peninsula.

September 23rd, 2009 LONDON - A new research by scientists has determined that blue whales have had to increase their 'singing' to cope with noise pollution from ships. Man-made noise such as ships' engines has caused hearing loss in whales.

September 2nd, 2009 SYDNEY - Secret Soviet whaling between 1947 and 1973 wiped out some humpback whale population in the Pacific, according to a new study. Wally Franklin, doctoral student at the Sydney based Southern Cross University's Whale Research Centre and co-director of The Oceania Project, co-authored the paper.

August 26th, 2009 WASHINGTON - Some Aussie frogs often raise their pitch as they serenade their partners, in order to counter traffic sounds, according to a study. Kirsten Parris, an ecologist at the University of Melbourne, says that one species of frog in Melbourne is changing the pitch of its love song to be heard above the roar of the road.

August 3rd, 2009 LONDON - Hydrophones have revealed that bowhead whales can sing in different voices to attract a mate and thereby ensure the species' survival. This is probably because global warming has opened up the Northwest Passage in 125,000 years, enabling the 100 tonne bowhead whales of the northern Pacific to reach Disko Bay in Greenland to mate with other whales.

July 7th, 2009 LONDON - a report published by the International Fund for Animal Welfare (IFAW) has suggested that watching whales is far more profitable than eating them. According to New Scientist, the report found that revenues from whale watching in 2008 reached 2.1 billion dollars, which is double the amount earned a decade ago.

June 24th, 2009 WASHINGTON - In a new study, scientists have warned that a new form of unregulated whaling, called 'bycatch', is becoming a growing threat to whales along the coastlines of Japan and South Korea. According to Scott Baker, associate director of the Marine Mammal Institute at Oregon State University, DNA analysis of whale-meat products sold in Japanese markets suggests that the number of whales actually killed through this "bycatch whaling" may be equal to that killed through Japan's scientific whaling program - about 150 annually from each source.

June 18th, 2009 Australia, NZ to study Antarctic whalesWELLINGTON, New Zealand — Australia and New Zealand announced Thursday a non-lethal whale research expedition to the Antarctic, a direct challenge to Japan's research program that kills up to 1,000 whales a year. The six-week expedition, to set sail in a New Zealand ship early next year, will prove that whales can be studied without killing them, the two governments said in a joint statement.

June 15th, 2009 LONDON - Biologists studying sperm whales in the North Atlantic have found that mothers use organised babysitting sessions so they can go hunting for food. Scientists at the University of St Andrews, Durham University and Dalhousie University in Halifax, Nova Scotia, have discovered that females share responsibility for the younger members of a pod by establishing networks of carers.he whales are specially adapted to allow them to make long, deep dives.

June 1st, 2009 LONDON - In a new research, scientists have discovered that there are babysitters in whale populations as well, which look after the young ones of mother whales while they go hunt for food. According to a report in New Scientist, Shane Gero of Dalhousie University in Nova Scotia, and colleagues tracked two populations of sperm whales in the Caribbean and Sargasso seas to see what happened when mother whales dived for food.

May 30th, 2009 WASHINGTON - Acoustic experts confirmed tracking a singing blue whale 112 km off the Long Island and New York City early this year, even as the second one was heard singing in the far distance. These endangered blue whales are the largest animals ever to have lived on this planet, and their voices can travel across an ocean.

May 21st, 2009 WASHINGTON - Scientists have documented the presence of endangered North Atlantic right whales with the help of underwater hydrophones that can pick up sounds from hundreds of kilometres away. The discovery is particularly important because it is in an area where these whales were thought to be extinct and one that may be opened to shipping if the melting of polar ice continues, as expected, said researchers.

May 21st, 2009 WASHINGTON - A team of scientists, using a system of underwater hydrophones that can record sounds from hundreds of miles away, has documented the presence of endangered North Atlantic right whales in an area they were thought to be extinct. The scientists are from the Oregon State University (OSU) and the National Oceanic and Atmospheric Administration (NOAA).

February 8th, 2009 WASHINGTON - Young 'right whales' learn from their mothers where to eat, prompting concerns among biologists about their ability to find new places to feed if changing climate disrupts their traditional dining areas. 'A primary concern is, what are whales going to do with global warming, which may change the location and abundance of their prey?' asked Vicky Rowntree, research associate professor of biology and a co-author of the new study at Utah University.

February 2nd, 2009 WASHINGTON - Killer whales closer to menopause seem to be more successful in bringing up their young, whose survival rates were also higher. Eric Ward of Northwest Fisheries Science Centre, Seattle, coordinated a team of researchers who studied killer whales inhabiting the inland and near shore waters of Washington state and British Columbia (Canada).