However, the Marines life mirgrations more then often is not what one can control. As the marine life may have caught into the shell or those structure of their ship body.
The roots of the pollution on the sea mainly due to the diesel spills or leads. I my opinion, We must take the lead to go for the clean energy on all ship within the next 5-15 years. I have been researching into these issues since I was 20th years old.. each time the ship called into dock or the port, I saw the amount of waste & those pollutions or containminations.. such as human waste, scales, paints, rusts...etc., have been dump into the sea, be it intensionally or un-intentionally.
The only way out is to convert the ship engine to the Alternative Energy. Such as Hydrogen; Solar; Wind; even Fuel Cells should be considered.
Ships No Longer Allowed to Dump Ballast
By TERENCE CHEA Associated Press Writer
SAN FRANCISCO A federal judge ruled Thursday the government can no longer allow ships to dump without a permit any ballast water containing nonnative species that could harm local ecosystems.
U.S. District Judge Susan Illston ordered the Environmental Protection Agency to immediately repeal regulations exempting ship operators from having to obtain such permits.
"This is a slam dunk for healthy oceans," said Sarah Newkirk, clean water advocate for the Washington, D.C.-based Ocean Conservancy. "The court decision will prevent a vast amount of pollutants from the shipping industry from entering U.S. waters."
EPA officials did not immediately return calls seeking comment.
In 1999, the Ocean Conservancy and four other environmental groups petitioned the EPA to repeal the ballast-water exemption. They claimed the Clean Water Act prohibits the discharge of pollutants, including biological materials - such as invasive species - into U.S. waters without a permit.
When the EPA denied the petition, the conservation groups filed a lawsuit in federal court in San Francisco in 2003.
Invasive species are known to cause significant economic and environmental damage. Marine species such as mollusks often are inadvertently transported in the ballast water of ships and discharged at ports far from their origins.
The bay's two most destructive species that originated in ballast water are Chinese mitten crabs, which clog irrigation and drinking water pipes, and Asian clams, which consume large amounts of plankton at the expense of other marine species.
Invasive species in San Francisco Bay cause more than $40 million in economic damage each year, Newkirk said.
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