Search This Blog

Thursday, March 4, 2010

Great white sharks head south for the winter

3 of 5  great white sharks which were  electronically tagged by scientists off the coast of Massachusetts  to help marine biologists  understand more about Great white shark behavior, have been found to have an interesting way of life.According to the website
http://www1.whdh.com/news/articles/local/BO136943/ 


the sharks all headed south for the winter.



“It’s remarkable how little we know about one of the more charismatic, popular sharks in the world,” shark expert Greg Skomal, senior biologist at the state Division of Marine Fisheries, announced yesterday at the New England Aquarium.
Skomal said the tags started sending back signals Jan. 15.



http://www.bostonherald.com/news/regional/view/20100304cape
_sharks_will_be_back_data_shows/srvc=home&position=also  
Skomal hypothesizes that these sharks
will return to the waters off the coast of New England in the spring.

"The preliminary data indicate that the sharks remained in southern New England waters until late September before moving west and then south along the East Coast of the U.S. While off Massachusetts, the sharks demonstrated daily movement from the surface to depths below 100 feet."


"During their southern migration, the white sharks remained on the continental shelf and continued to rise and descend through the water column, on an almost daily basis. By mid to late October, they were off the coast of North Carolina. The first tags to surface indicate that two of the sharks arrived off the coast of northern Florida by early December, and remained in this region until their tags popped loose, as they are designed to do."
"Although the sharks moved between the surface and the bottom, they spent more than 90 percent of their time at depths less than 150 feet. One of the sharks exhibited a deviation from this pattern when it entered the Gulf Stream off North Carolina for 10 days in early November and exhibited daily dives to depths as great as 1,500 feet."
"The analysis of the first two tags show the sharks to which they were attached demonstrated seasonal residency off southern New England and northern Florida, two highly productive areas that likely provide ample feeding opportunities. The purpose of the deep diving behavior exhibited by one of the sharks remains a mystery, but such behavior is typical of white sharks off the Pacific Coast."

These sharks had closed beaches off Massachusetts when they were discovered swimming there:
you can watch this video from Youtube concerning this fact:

Here is a link to a CBS news story concerning one of these sharks:

http://www.cbsnews.com/video/watch/?id=645721n




Lets hope that scientists gain new information concerning Great white sharks which will help them understand shark
behavior to a deeper degree, as a means of ensuring these animals continue to be able to live in the waters of our 
planet for all eternity.

No comments:

Visit GM Alexandra Kosteniuk's Women's Chess Blog:Please click on the image below:

Visit GM Alexandra Kosteniuk's Women's Chess Blog:Please click on the image below:
Chess needs more women and girl participants and administrators!

Thoughts worth thinking about

"Our subconscious minds have no sense of humor, play no jokes and cannot tell the difference between reality and an imagined thought or image. What we continually think about eventually will manifest in our lives."-Sidney Madwed



Laws alone can not secure freedom of expression; in order that every woman and man present their views without penalty, there must be spirit of tolerance in the entire population.- Albert Einstein Too often we underestimate the power of a touch, a smile, a kind word, a listening ear, an honest compliment, or the smallest act of caring, all of which have the potential to turn a life around. - Leo Buscaglia



A person's true wealth is the good he or she does in the world. - Mohammed



Our task must be to free ourselves... by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty. -Albert Einstein



The best way to find yourself, is to lose yourself in the service of others. - Ghandi



The unselfish effort to bring cheer to others will be the beginning of a happier life for ourselves. - Helen Keller



Aim for success, not perfection. Never give up your right to be wrong, because then you will lose the ability to learn new things and move forward with your life. Remember that fear always lurks behind perfectionism. Confronting your fears and allowing yourself the right to be human can, paradoxically, make yourself a happier and more productive person. - Dr. David M. Burns



Life is as dear to a mute creature as it is to man. Just as one wants happiness and fears pain, just as one wants to live and not die, so do other creatures. -His Holiness The Dalai Lama



Mankind's true moral test, its fundamental test (which lies deeply buried from view), consists of its attitude towards those who are at its mercy: animals. And in this respect mankind has suffered a fundamental debacle, a debacle so fundamental that all others stem from it. -



Milan Kundera, The Unbearable Lightness of Being



The worst sin towards our fellow creatures is not to hate them, but to be indifferent to them. That's the essence of inhumanity. -George Bernard Shaw

Ego's trick is to make us lose sight of our interdependence. That kind of ego-thought gives us a perfect justification to look out only for ourselves. But that is far from the truth. In reality we all depend on each other and we have to help each other. The husband has to help his wife, the wife has to help the husband, the mother has to help her children, and the children are supposed to help the parents too, whether they want to or not.-Gehlek Rinpoche Source: "The Best Buddhist Writing 2005 pg. 165

The hostile attitude of conquering nature ignores the basic interdependence of all things and events---that the world beyond the skin is actually an extension of our own bodies---and will end in destroying the very environment from which we emerge and upon which our whole life depends.