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Topic 43 of 58: Sharks

Sat, Jan 5, 2002 (11:47) | Alpha Wolf (wolf)
yeah, as much as we'd like to forget, they are part of the animal kingdom!
28 responses total.

 Topic 43 of 58 [SpringArk]: Sharks
 Response 1 of 28: Alpha Wolf  (wolf) * Sat, Jan  5, 2002 (12:06) * 1 lines 
 
one of the world's most misunderstood creatures (thanks to film). not that i'm in a hurry to go pet one or swim with them, does the shark family deserve the reputation it has?


 Topic 43 of 58 [SpringArk]: Sharks
 Response 2 of 28: Marcia  (MarciaH) * Sat, Jan  5, 2002 (13:47) * 1 lines 
 
What would you like to know about Chrondithyes? I happily live surrounded by them - me on dry land or tide pools too small for them to enter, and they in the deep seas surrounding the island keeping the food chain healthy and eliminating those who would not improve their species. Fifteen-foot tiger sharks are the ones who are particularly lethal here. Maui has had the fatalities, but the people were"asking for it" in little kayaks in our open oceans?! I suspect sharks have their own Darwin Awards which they present with all teeth and jaws set at the deadliest.


 Topic 43 of 58 [SpringArk]: Sharks
 Response 3 of 28: Marcia  (MarciaH) * Sat, Jan  5, 2002 (14:14) * 9 lines 
 
One of the more
famous fossil sharks is the Miocene Carcharodon megalodon, with serrated, triangular teeth (pictured on the
background of this page) ranging up to 17.5 cm (7 inches) in length. An early reconstruction of Carcharodon from
its teeth suggested that this shark reached 30 meters (100 feet) in length. However, this reconstruction was
made only from the largest single teeth found, without taking into account the fact that shark teeth taper in size
from the center of the mouth to the edges. A revised estimate of the size of Carcharodon puts its length at
"only" 12 meters (40 feet) -- about twice the size of the largest great white sharks of today.

http://www.ucmp.berkeley.edu/vertebrates/basalfish/chondrofr.html


 Topic 43 of 58 [SpringArk]: Sharks
 Response 4 of 28: Paul Terry Walhus (terry) * Sat, Jan  5, 2002 (20:27) * 1 lines 
 
I saw a great show on sharks earlier today, on the animal channel. Apparently, it's a weekly series.


 Topic 43 of 58 [SpringArk]: Sharks
 Response 5 of 28: Alpha Wolf  (wolf) * Sat, Jan  5, 2002 (21:32) * 3 lines 
 
yeah, they do jaws week a lot! that's where i learned that the bitten off arms and other appendages were just samples--the sharks were tasting to see if the "meal" was edible. apparantly, we taste bad!

we have great whites in the pacific and they have been known to dive deep for food (just on the news the other day)....


 Topic 43 of 58 [SpringArk]: Sharks
 Response 6 of 28: Alpha Wolf  (wolf) * Sat, Jan  5, 2002 (22:57) * 5 lines 
 
the following site contains links to all sorts of info on sharks:

http://www.pbs.org/wgbh/nova/sharks/resources.html




 Topic 43 of 58 [SpringArk]: Sharks
 Response 7 of 28: Marcia  (MarciaH) * Sat, Jan  5, 2002 (23:06) * 1 lines 
 
That is a great resourse - the PBS site you posted. I am trying to get mike to post here, too. He did make his maiden post in Geo nominating me as Queen of something. He would be a great addition!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 8 of 28: Alpha Wolf  (wolf) * Sat, Jan  5, 2002 (23:15) * 1 lines 
 
oh yeah, i remember that!!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 9 of 28: Alpha Wolf  (wolf) * Mon, Jan  7, 2002 (22:13) * 1 lines 
 
ok guys, i'm trying to figure out who the guy is that does shark research and is trying to undo all the damage jaws has done. this guy has long brownish hair and wears a shark tooth pendant around his neck on some leather or cording. i can see his face but don't remember his name. he has been featured on shark week (discovery) and other shows. (it's not the crocodile hunter or that other guy named niles)


 Topic 43 of 58 [SpringArk]: Sharks
 Response 10 of 28: Paul Terry Walhus (terry) * Sat, Jan 19, 2002 (08:54) * 7 lines 
 
I watched the shark show called "Shark Gordon" on Animal Planet. They showed tiger sharks off the coast of Waikiki.

There are about 3 shark attacks a year on these beaches.






 Topic 43 of 58 [SpringArk]: Sharks
 Response 11 of 28: Paul Terry Walhus  (terry) * Sat, Jan 19, 2002 (08:59) * 1 lines 
 
They flipped the tiger shark on it's belly and it quieted down, for some reason they incapacitate themselves when they're flipped on their belly.


 Topic 43 of 58 [SpringArk]: Sharks
 Response 12 of 28: Paul Terry Walhus  (terry) * Sat, Jan 19, 2002 (09:00) * 1 lines 
 
I should have added that 3 a year is pretty good odds for swimmers. There is no need to eradicate these sharks.


 Topic 43 of 58 [SpringArk]: Sharks
 Response 13 of 28: Alpha Wolf  (wolf) * Sat, Jan 19, 2002 (10:28) * 1 lines 
 
yeah, i think it's funny about sharks and their bellies being rubbed!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 14 of 28: Alpha Wolf  (wolf) * Tue, Apr 23, 2002 (17:19) * 61 lines 
 
from Marcia in Geo:

Topic 36 of 73 [Geo]: Oceanic Geo
Response 60 of 62: Marcia (MarciaH) * Mon, Apr 22, 2002 (23:49) * 24 lines

Rare Megamouth Shark Found on S.African Beach

JOHANNESBURG (Reuters) - A rarely seen megamouth shark, unknown
to science before 1976, has washed up on a South African beach,
scientists said Monday.
"We are very excited because it is only the third female to be discovered to
date and we know almost nothing about its biology, so we are keen to
dissect and study it," Dr. Vic Cockcroft of the Center for Dolphin Studies
told Reuters.
The 3.5 meter (12-foot), 300-kg (660 pound) female is the first
megamouth to be discovered in southern Africa. It washed up on a beach
Saturday morning about 400 kilometers (249 miles) east of Cape Town.

"They are rarely seen because they are usually far offshore feeding on
plankton. We are unsure about their numbers... We have no information
on how many there are," Cockcroft said.
Only about a dozen specimens, mostly males, have been found since the
animal was discovered when a U.S. navy experimental trawler caught one
off Hawaii in 1976, Cockcroft said.
The creature has also been found near California, Japan, the Philippines,
Senegal, Indonesia and western Australia.

As its name suggests, the creature has a massive mouth but is
harmless to humans as it is a plankton eater.

The body of the megamouth shark is flabby and its fins are soft, suggesting that it is a
leisurely swimmer and mostly in mid-water where scarring shows it has been attacked
by the semi-parasitic cookiecutter shark. In fact, the megamouth is the only known
shark to fall victim to this fearsome little shark that sucks onto its (usually marine
mammal) prey and knifes out a round plug of flesh with the sharp triangular teeth in its
lower jaw.

Every year, the list of known shark species is enlarged by new discoveries. The
addition of the megamouth to the list of more than 400 living shark species is surely the
most exciting of this century.

http://www.seatrek.org/curriculum/reference/species/mega.htm
Megamouth was first discovered in 1976 when one was caught
south of the Hawaiian Islands. To date only a few
have been taken, all of them in the Pacific. One specimen brought into San Diego
harbor was too big to handle and was towed out to sea and released.

The megamouth is very large -- 15 to 17 feet long and weighs around 1500 pounds. It
is dark brown on top and silvery white on the bottom, with two dorsal fins and an anal
fin. It has a short but broadly rounded snout and a very large head. The huge mouth
with blubbery lips extends behind the eyes and is lined with more than 100 rows of
small hooked teeth with which it captures planktonic animals. Examination of the
stomach contents of the first caught megamouth revealed that its diet was mostly
euphasiid shrimp which are also eaten by the two other filter feeding sharks, the
basking shark and the whale shark. This kind of shrimp is generally found between
900 and 3300 feet during the day and rises to between 450 and 1500 feet at night -- a
migratory pattern the megamouth apparently follows.






 Topic 43 of 58 [SpringArk]: Sharks
 Response 15 of 28: Alpha Wolf  (wolf) * Fri, May 10, 2002 (20:41) * 1 lines 
 
some talk about tiger sharks in geo (oceanic geo), take a look-see!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 16 of 28: amanda  lynn   pack  (lnny) * Fri, May 10, 2002 (21:10) * 1 lines 
 
well i alwayes wanted to be a star and i'm realy glad to enter


 Topic 43 of 58 [SpringArk]: Sharks
 Response 17 of 28: amanda  lynn   pack  (lnny) * Fri, May 10, 2002 (21:11) * 1 lines 
 



 Topic 43 of 58 [SpringArk]: Sharks
 Response 18 of 28: GeoCritter  (MarciaH) * Sat, May 11, 2002 (00:21) * 1 lines 
 
Aloha Amanda. I love your name!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 19 of 28: Alpha Wolf  (wolf) * Sat, May 11, 2002 (10:25) * 1 lines 
 
hi amanda!! glad to see you here!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 20 of 28: Alpha Wolf  (wolf) * Tue, Jul 30, 2002 (20:15) * 3 lines 
 
leopard sharks are back--they are really pretty sharks though. see the below link (nevermind the typo in the link-they're sharks not whales):

http://abclocal.go.com/kabc/news/073002_nw_leopard_whales.html


 Topic 43 of 58 [SpringArk]: Sharks
 Response 21 of 28: Alpha Wolf  (wolf) * Wed, Jul  9, 2003 (18:09) * 39 lines 
 
Researchers to Tag Great Whites off Southland Coast

LOS ANGELES Researchers today will begin tagging great white sharks -- they may also try to capture one -- off the Southern California coast as part of a multi-year project of the Monterey Bay Aquarium.
The goal of the project, now in its second year, is to answer basic questions about the lives of baby great whites.

"Right now, their lives are a great unknown," said Randy Kochevar, the aquarium's science communications manager. "We're in a good position to unlock some of the mysteries."

Southern California is believed to be a "pupping ground" for great whites, and young ones are sometimes caught in fishing nets and other commercial fishing gear during the summer months, according to the researchers.

Great whites hatch from eggs inside the mother, and are born live after a gestation period believed to be a year or longer. A typical litter is believed to be 7-9 pups -- though the birth of a great white has never been observed.

The research team, working with the Southern California Marine Institute and the Shark Lab at Cal State Long Beach, will be in Southern California through Aug. 8.

Just last week, two sharks, each roughly 6 feet, were spotted about a mile offshore just north of the Santa Monica Pier and tentatively identified as juvenile great whites.

The researchers, collaborating with commercial fishermen, will tag sharks with instruments that record data such as location, depth and preferred water temperatures, according to the aquarium. The tags eventually come loose and transmit the data via satellites.

The aquarium will have its own vessel in the waters off Ventura County over the next 30 days to aid in the tagging and releasing of any great whites, makos or thresher sharks landed, according to researchers with the project, which is scheduled to continue through 2004 or 2005.

As many as a half dozen white sharks could be tagged this year, according to John O'Sullivan, curator of field operations for the Monterey Bay Aquarium.

A great white has never been held in captivity for more than two weeks but, if the opportunity presents itself, researchers will try to capture one.

The aquarium's research team will have a 1-million-gallon ocean pen and transport truck equipped with a life-support system capable of keeping a great white shark alive until it reaches Monterey, O'Sullivan said.

"We're taking a slow, systematic approach," he cautioned. "There are a lot of steps, and a lot to learn, before we'd try to put a great white shark on display."

O'Sullivan said the team would only try to transport a white shark to the aquarium if it swims vigorously in the ocean pen, starts to feed and responds well in the transport vehicle.

If a suitable great white were captured, it would be kept in the aquarium's Outer Bay exhibit.

In addition to the project focusing on baby great whites off the Southern California coast, Monterey Bay aquarium researchers are continuing to tag adult great whites in the shark-rich waters off the central coast, O'Sullivan said.

Some of those tagged sharks have turned up as far away as Hawaii, he said.

At least 34 species of sharks are found in California waters. In 1992, the state listed great whites -- Carcharodon carcharias -- as a protected species, making it illegal to fish for them.





 Topic 43 of 58 [SpringArk]: Sharks
 Response 22 of 28: Alpha Wolf  (wolf) * Mon, Sep  1, 2003 (10:54) * 3 lines 
 
after a recent fatal tasting by a great white on a woman swimming with seals, Orange County has posted a shark warning (OC isn't that far from the beaches i comb for shells). here's the article:

http://abclocal.go.com/kabc/news/083103_nw_shark_warning.html


 Topic 43 of 58 [SpringArk]: Sharks
 Response 23 of 28: Paul Terry Walhus (terry) * Wed, Sep  3, 2003 (12:15) * 2 lines 
 
Whoa, sounds like a wine tasting event or something.



 Topic 43 of 58 [SpringArk]: Sharks
 Response 24 of 28: Alpha Wolf  (wolf) * Wed, Sep  3, 2003 (19:16) * 1 lines 
 
to the sharks maybe!


 Topic 43 of 58 [SpringArk]: Sharks
 Response 25 of 28: Alpha Wolf  (wolf) * Wed, Sep 24, 2003 (21:03) * 4 lines 
 
more shark sitings:

http://abclocal.go.com/kabc/news/092303_nw_shark_sighting.html



 Topic 43 of 58 [SpringArk]: Sharks
 Response 26 of 28: Alpha Wolf  (wolf) * Mon, Oct 20, 2003 (18:10) * 67 lines 
 
Naturalists: 'Finning' Threatens Galapagos Sharks Mon October 20, 2003
08:44 AM ET By Amy Taxin GALAPAGOS ISLANDS, Ecuador (Reuters)
- They may not be cute like the sea lions that waddle on sandy beaches or the
once-endangered giant tortoises featured in campaigns to conserve Ecuador's
exotic Galapagos Islands. But sharks, which draw tourists and scuba divers,
are increasingly a cause celebre in Galapagos. Environmentalists and the
tourism industry are lobbying for more protection for sharks from fishermen
who see a lucrative business in exporting their prized fins. Shark fishing
is illegal in Galapagos. But that doesn't stop small motorboats from
cruising the islands' Pacific Ocean waters at night to hunt the giant fish,
whose fins command top dollar in Asia where they are eaten in a costly soup.
Supporters want tougher enforcement, education efforts, alternative sources
of income for fishermen and greater smuggling controls. Conservationists
fear shark numbers in the marine reserve surrounding the islands could be
depleted by the fatal practice known as "finning" in which the shark fins
are cut off and the body tossed back in the water to hide the evidence.
Galapagos National Park authorities have confiscated more than 5,000 fins so
far this year alone. "If this data is just a minimum, we could be facing a
serious situation," said Patricia Zarate, a marine biologist at the Charles
Darwin Research Station on Santa Cruz Island who has studied sharks in the
islands. "To me, the number of sharks they're pulling out right now puts the
archipelago on alert." Environmental groups worry diminishing shark
populations could disrupt the delicate balance in the archipelago, 625 miles
west of the mainland, especially since the giant fish can take decades to
reproduce. Conservationists say about 100 million sharks are caught every
year worldwide, mostly just for their fins. The peculiar fauna in
Galapagos, where no human beings settled until the 19th century, have made
the islands famous around the world and inspired British naturalist Charles
Darwin's theory of natural selection. RISKY BUSINESS Galapagos has just a
handful of patrol boats to prevent foreign ships from invading the reserve
to fin hammerhead and whale sharks, which abound in its carefully conserved
waters and lure millions of tourism dollars each year. The park has a tough
time controlling local fishermen as well, who say they can make better money
by finning sharks than labor-intensive tuna fishing that doesn't bring home
enough cash for them to feed their families. Cracking his knuckles and
shifting his feet on a shabby carpet in his home in Santa Cruz, one portly
Galapagos fisherman admits he can make a handsome profit by selling fins on
Ecuador's mainland once he sneaks them past sniffing dogs at port in sacks
of coffee or tanks for fuel. Even so, the 38-year-old said he held back
this year over fear of getting caught. "It's not so risky for the fisherman
because he makes his catch and sells it, but it's risky for the salesman,"
he said, on condition of anonymity. Some fishermen reel in dead sharks as
bycatch and say it would be silly to turn down a sale. They say a pound (400
grams) of fins sells for $30 in Galapagos and double on the mainland.
Others justify heading out to fin, claiming decades of industrial fishing in
the islands -- before it was prohibited in 1998 -- didn't wipe sharks out.
SCHOOLS DIMINISH But avid scuba divers say the islands' turquoise waters,
which housed hundreds of sharks a decade ago, aren't the same. And many
tourism operators who depend on quality diving with hammerhead sharks
swimming peacefully overhead for business, are pushing for tighter controls
to ensure their main undersea attraction remains intact. "Fifteen years ago
there were huge schools of hammerheads in this one area. You could talk
about 100 or 200 or 300. Now, if you see 20 or 30, you're very lucky," said
Mathias Espinosa, who has a diving business catering to tourists in Santa
Cruz. Galapagos generates about a third of Ecuador's $430 million-a-year
tourism business, according to a report by Quito-based conservation group
Fundacion Natura. Environmentalists admit it's tough to create a culture of
conservation overnight in Galapagos, where fishermen lived for decades with
few rules before a new law was passed in 1998 aimed at protecting the
archipelago. Part of the problem is that while shark fishing is illegal in
Galapagos, fins are sold freely on the mainland. And so long as there's
demand in Asia for shark-fin soup -- which can sell for $100 a bowl --
experts say smuggling will persist. "The problem is while it's banned in
Galapagos, it's allowed on the coast," said Mario Piu, head of marine
resources for Galapagos National Park. "People buy and sell sharks on the
mainland with papers that don't show where they came from."



 Topic 43 of 58 [SpringArk]: Sharks
 Response 27 of 28: Packy O'Brien  (historian) * Mon, Jan 15, 2007 (18:10) * 13 lines 
 
Conservationists seek sympathy for sharks

By Associated Press

HONOLULU (AP) _ Conservationists have a hard time lobbying on behalf of sharks when many people are intimidated by the animal's razor sharp teeth, carnivorous appetite and bad reputation as ``man-eaters.''

So they're trying some novel tactics, including launching adopt-a-shark programs, creating cartoon shark stickers, and publicizing NBA star Yao Ming's disavowal of shark fin soup.

Experts say people's attitudes toward sharks are changing.

For example, conservationists succeeded in getting the smalltooth sawfish listed as an endangered species four years ago despite the shark relative's bizarre-looking snout and protruding teeth.

They launched an awareness campaign featuring a cartoon sticker of a kindly looking shark saying ``please protect my pal, the endangered sawfish.''


 Topic 43 of 58 [SpringArk]: Sharks
 Response 28 of 28: Alpha Wolf  (wolf) * Tue, Feb 27, 2007 (20:00) * 1 lines 
 
Thanks Packy....I think that the only way to overcome the fear we have is to learn the truth......but that doesn't mean I'm in a hurry to swim with them!!

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