"Dr. Jack Musick, emeritus professor at the Virginia Institute of Marine Science, has overseen a global study suggesting that 33 percent of shark, skate, and ray species are threatened with extinction."
"The group's work suggests that 345 of the 1,044 species of cartilaginous fishes studied (33%) are "threatened," a broad grouping that includes species in the "vulnerable," "endangered," and "critically endangered"
To read this entire article please click on the following link: http://www.eurekalert.org/pub_releases/2010-10/viom-ssa102510.php
This is very bad news for these species. If these species leave our planet, our human existence is threatened! Why is human existence on this planet as a species threatened if sharks species go extinct?
Sharks exist on top of the marine food chain, the disappearance of shark species from our oceans would have cause detrimental effects throughout the entire marine ecosystem.Plankton makes up 70% of the Earths oxygen. Millions of fish eat this plankton, but luckily the sharks eat and control the population of the fish.. but for how much longer?
Now I would like to return to the article which indicates that a third of shark and ray species are threatened with extinction. In this article I found the following statements:
"The ray population there has exploded because the sharks that normally preyed on them were overfished. The large numbers of rays in turn gobbled excessive volumes of scallops, decimating the local scallop fishery."
"A 2007 study in the journal Science outlined this chain reaction."
"Marie Levine, founder and executive director of the Shark Research Institute in Princeton, N.J., said the area's water quality also deteriorated, because scallops filter water."
"Sharks are critical to the health of the ocean," Levine said.
What can you do to save the Shark species from extinction? Plenty. Please visit the following website to learn about 10 actions you can take to save sharks:
For your information, the documentary "Sharkwater" which is mentioned at the savingsharks.com website above can be purchased at the following website:
Other websites which gives you a list of ways you can help saves sharks are:
You can watch a trailer for the documentary "Sharkwater" by clicking on the following link:
Please watch these two videos (especially if you live in areas where sharks are being overfished or killed for their fins to make shark-fin soup):
Shark Protest from Graydon Pieterse on Vimeo.
Unnatural Selection - Shark Finning on the Frontier from Blue Sphere Media on Vimeo.