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September 3, 2010

Yikes! Sharks in the Bay - No 'Jaws' Here, Please!

 

Not one, but two big bull sharks turned up this week in the Potomac River - prompting the usual media focus on how dangerous they can be to humans. This time, though, the tables were turned, and the Chesapeake Bay may be the poorer for it.

Willy Dean, a commercial fisherman in St. Mary's County, put a net near the mouth of the Potomac earlier this week to collect some cownose rays for biologists to study, according to The Washington Post. He got more than he bargained for when he found an 8-foot bull shark in the net.

"When I first seen it, it was like 'Jaws' -- we need a bigger boat!" Dean told The Post. He said he spent two hours trying to wrestle the shark (seen above) into his 22-foot boat.  The next day, another St. Mary's fisherman, Thomas Crowder, reported finding another 8-foot bull shark in his net, the Post reported.

Sharks aren't uncommon in the Chesapeake Bay, especially in Virginia waters. But bull sharks have been sighted before - a 420-pound, 8 1/2-footer was caught near the Bay Bridge in 1987, The Baltimore Sun reported.

Bull sharks are said to be among the more aggressive predators of the sea, figuring in many reports of attacks on humans. They're also apparently more wide-ranging than most, capable of tolerating fresh water.  But there've been no reported shark attacks on people in the bay. And in this case, neither shark survived its encounter with humans.

These sharks aren't classified as endangered, so why lament their loss?  As BayDaily blogger Tom Pelton pointed out, there've been sharp declines in shark populations, largely the result of fishing pressure. Biologists in 2007 reported a more than 99 percent drop in numbers of bull sharks, among others.

The loss of such top predators has ripple effects in nature. One scientists have noted is an explosion of cownose rays and other creatures on which sharks feed. The kite-shaped rays feast on the Bay's shellfish.  So, if only for the sake of our struggling clams and oysters, let's hope there are more sharks out there - and that we can steer clear of each other.

(Photo courtesy Buzz's Marina)

Posted by Tim Wheeler at 5:35 PM | | Comments (4)
        

Comments

Not all Bull sharks are aggressive. Sharks are like dogs, even with in one species there are different personalities and some can be quite shy and docile while others are inquisitive or aggressive. It's possible these sharks are looking for a safe area to give birth if they were female. It's easy to tell as males have two external sex organs call claspers. There is a Park on the Potomac River famous for shark teeth so the sharks have been in the area for quite some time

Kate, I agree with you. Bull sharks are known for giving birth in the Chesapeake. The Chesapeake Bay is also the largest breeding ground for sandbar sharks (confused by many to be bull sharks) second only to the Delaware bay. Lets just hope these bulls were not pregnant.
As for the teeth, they have been there since the sea level was much higher, and are over 30 million years old.

Hey kate thanks for sharing the info.i thought that all sharks are very fierce and they are man eaters!For bull sharks I know that they are very aggressive.

My Father in Law was the one to catch the bull shark in 1987. He has the pictures to prove it. He also caught one in 1985.

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About the bloggers
Tim WheelerTim Wheeler reports on the environment and Chesapeake Bay. A native of West Virginia, he has focused mainly on Maryland's environment since moving here in 1983. Along the way, he's crewed aboard a skipjack in the bay, canoed under city streets up the Jones Fall from the Inner Harbor, and gone deep underground in a western Maryland coal mine. He loves seafood, rambles in the country and good stories. He hopes to share some here.

Contributor Christy Zuccarini has been blogging about the local DIY craft scene for a year for Baltimoresun.com. She brings her pespective on all things handmade to B'More Green, where she will highlight projects you can do yourself as well as crafters who are integrating sustainable methods and materials.
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