A Disabled Orca, Navy Dolphins and Sea Level Rise

Written by on May 20, 2013 in Marine Life, Whales & Dolphins

Daily Summary

Disabled killer whale with missing fins survives with the help of family who hunt for its food

If anybody needed another reason to be amazed with orcas (killer whales), here it is: a young disabled orca that is missing its dorsal fin and right-side pectoral fin is surviving with the help of its pod. The orca was recently photographed by Rainer Schimpf who was tracking the pod while they hunted a Bryde’s whale off Port Elizabeth in South Africa. Missing those fins, the young male is unable to participate in the hunt, but it appears that the other members his pod share their food with him.

A bottlenose dolphin, part of the United States Navy Marine Mammal Program, wearing a pinger.

A bottlenose dolphin, part of the United States Navy Marine Mammal Program, wearing a pinger. Photo credit: U.S. Navy.

Navy dolphins find 19th century Howell torpedo off Calif. coast

During a mine detection training exercise, a U.S. Navy dolphin (yes, dolphins are still used in the U.S. Navy — check out the last post here to learn more) recently discovered a 19th century torpedo off the coast of San Diego, California. The 11-foot brass Howell torpedo was one of the first self-propelled torpedoes ever built and was deployed sometime between 1870 and 1889. The humans involved in this exercise were surprised by the find. Currently, there are 80 dolphins and 40 sea lions being trained for military purposes.

World’s melting glaciers making large contribution to sea rise

About 99 percent of all land ice on Earth is contained in the Greenland and Antarctic ice sheets. But, a new study reveals that from 2003-2009, the remaining ice in other glaciers contributed just as much to sea level rise as the Greenland and Antarctic ice sheets combined. The study’s authors note that most people tend to ignore the other glaciers because their ice mass is so small compared to the two major ice sheets, but they have actually caused the oceans to rise 0.03 inches (0.7 mm) per year during the study period. To learn more about sea level rise, check out this article about the effect that Earth’s mantle has. http://i.livescience.com/32060-mantle-flow-changes-topography.html

Melt water in NW Greenland.

Melt water in NW Greenland. Photo credit: NOAA.

Copyright © 2013 by Marine Science Today, a publication of Marine Science Today LLC.

About the Author

About the Author: Emily Tripp is the Publisher and Editor of MarineScienceToday.com. She holds marine science and biology degrees from the University of Miami's Rosenstiel School of Marine and Atmospheric Science and a Master of Advanced Studies degree in Marine Biodiversity and Conservation from Scripps Institution of Oceanography. When she's not writing about marine science, she's probably running around outside or playing with her dog. .


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