06 Nov 2012:
World’s Rarest Whale Species
Identified After New Zealand Beaching
Scientists have confirmed that two whales that washed onto the New Zealand coast two years ago were spade-toothed beaked whales, an enigmatic species so rare that no human is known to have ever seen one alive
. Writing in the journal Current Biology
, New Zealand and U.S. researchers provide the first
full description of the species, which previously was known only from three skull fragments recovered over a 140-year span, the most recent of which was found 26 years ago. When conservation workers initially found the adult whale and her 11-foot male calf on a New Zealand beach in December 2010, they thought they were Gray’s beaked whales, a far more common species. But DNA tests of tissue samples collected from the animals revealed that they were actually spade-toothed beaked whales
), a species whose males have blade-like tusk teeth. Researchers later exhumed the whales to conduct additional tests. The scientists say they don’t know why the whales are so elusive. “It may be that they are simply an offshore species that lives and dies in the deep ocean waters and only rarely wash ashore,” said Rochelle Constantine, a researcher at the University of Auckland and co-author of the study. “New Zealand is surrounded by massive oceans. There is a lot of marine life that remains unknown to us.”
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
A look at how acidifying oceans could threaten the Dungeness crab, one of the most valuable fisheries on the U.S. West Coast. Watch the video.
is now available for mobile devices at e360.yale.edu/mobile
An aerial view of why Europe’s per capita carbon emissions are less than 50 percent of those in the U.S. View the photos.
An indigenous tribe’s deadly fight to save its ancestral land in the Amazon rainforest from logging. Learn more.
video series looks at the staggering amount of food wasted in the U.S. – a problem with major human and environmental costs. Watch the video.
Residents of the Chocó Rainforest in Ecuador are choosing to plant cacao over logging in an effort to slow deforestation.
Watch the video.
Tribal people and ranchers join together to stop a project that would haul coal across their Montana land. Watch the video.