| Bony fish (10) |  |
| Cartilaginous fish (1) | |
| Ray (153) | |
| Sardine (22) | |
| Shark (105) | |
| Soft-finned fish (327) | |
| Spiny-finned fish (326) | |
| Bony fish (10) | |
| Cartilaginous fish (1) | |
| Ray (153) | |
| Sardine (22) | |
| Shark (105) | |
| Soft-finned fish (327) | |
| Spiny-finned fish (326) | |
he immediately remarked"petting the sharks at the aquarium, Â then, after a pause,"oh, and seeing Bono!
but this is nothing compared with the blacktip reef shark (Carcharhinus melanopterus) found in the tropical and subtropical waters of the Indian and Pacific oceans.
Female sharks of many species may have evolved thicker tougher skin than males for this very reason.
this treacherous bit of sea is known as the triangle of death for good reason oe the considerable threat of great white sharks is increased by the conspicuous absence of kelp that otters normally use to hide.
#Sharks and Wolves: Prey Interactions Similar On land and in Oceans major predators help control the populations of their prey
as well as sharks and dugongs in Australia. In each case, the major predators help control the populations of their prey,
what has been learned about wolf and elk interaction in Yellowstone national park in the U s. to the interplay of tiger sharks and dugongs in Shark Bay, Australia.
that feed primarily on seagrasses and are a common prey of sharks. In studies with elk, scientists have found that the presence of wolves alters their behavior almost constantly,
Conceptually similar activities are taking place between sharks and dugongs, the researchers found. When sharks are abundant,
dugongs graze less in shallow water where they are most vulnerable to sharks, and sacrifice food they might otherwise consume.
This allows the seagrass meadows to thrive, along with the range of other plant and marine animal species that depend on them.
In Shark Bay, green sea turtles are more willing to face risks from sharks and seek the best grazing areas when their body condition is strong.
Sharks are old: there were sharks in the ocean before the dinosaurs. And the reason there are still sharks around is that sharks are better at being sharks than anything else is.
Physical books are tough, hard to destroy, bath-resistant, solar-operated, feel good in your hand:
they are good at being books, and there will always be a place for them.
) Sharks can and do get cancer. The myth that they don t was created by I. William Lane to sell shark cartilage as a cancer treatment.
Sharks About 100 million sharks are killed each year to be made into shark fin soup a Chinese delicacy.
Nevertheless one-third of sharks and rays are threatened with extinction according to a 2009 study by the IUCN.
The hunting of sharks has increased also dramatically primarily due to increased demand for shark fin soup in China a substance that has shown repeatedly beenâ to be high in toxins.
Up to 73 million sharks are killed each year to quench this demand. Ocean ecosystems depend upon these predators to keep the web of life balanced. 7. Consume less This one is pretty simple:
While animals like sharks are known to sense electrical fields nobody had ever found that an insect could do the same Scientificamerican reports.
and trapping seasons on protected species. To get involved visit www. keepwolvesprotected. com. Pacelle's most recent Op-Ed was Sharks Gain Protections in India Will U s. Follow suit?
Sharks are endangered worldwide largely because of shark finning the removal of dorsal fins from still-living sharks for the Chinese delicacy known as shark fin soup.
#Coolest Science Stories of the Week<p></p><p>Science brought us walking sharks artistic chimps and even the first human mind-meld?</
</p><p>These sharks don't always rely on walking to move about often they only appear to touch the seafloor as they swim using their pectoral
</p><p>The Sunshine state already home to man-eating sinkholes invading Burmese pythons swarming sharks tropical storms
A lot of sharks that were alive during the time of Megalodon are still around today. Megalodon's short history made Pimiento ask
Though the mega-sharks died off their close relatives great white sharks still terrorize the seas today.
The sugary fluid which has sunk to the bottom has killed thousands of fish attracting sharks and other scavengers.
Fishermen kill as many as 100 million sharks per year worldwide spurred in part by demand for shark fin soup a traditional Chinese delicacy.
Just a few years ago most Chinese didn't know that the dish came from sharks as its name translates to fish wing soup according to the Washington post.
because sharks and eels were coming into the harbor to feed on the dead fish. It's sugar in the water Janice Okubo a spokeswoman for the Hawaii State department of Health told the Times.
and NMFS works hand-in-hand with many sectors of the fishing industry including people who kill sharks
Creepy, Freaky Creatures That Are (Mostly) Harmless From snaggletoothed sharks to giant crabs nature is full of animals that frighten people often for no good reason.
Public domain) Sand tiger Sharks The sand tiger shark has a mouth like a barbed-wire fence featuring row after row of sharp slender teeth.
But sand tigers want nothing to do with people their diet consists of small fish rays squids and shellfish.
Lauren Nichols Yourwildlife. org) Goblin Sharks With its pointy nose and protruding jaws the goblin shark looks like a swimmer's nightmare
Goblin sharks live in the deep ocean more than 200 meters 660 feet down where they would never encounter a human said Chip Cotton a fisheries ecologist at Florida State university.
Cotton notes that goblin sharks are also slow swimmers with soft flabby bodies and that while the jaws look menacing they're designed to snag squid not people.
Sharks and rays continued in abundance. On land the giant swamp forests of the Carboniferous began to dry out.
and priestesses and is now available at liquor stores across the United states thanks to a reconstruction effort by Patrick Mcgovern a biomolecular archaeologist at the University of Pennsylvania Museum of Archaeology and Anthropology and Delaware-based Dogfish Head Craft
With Mcgovern's help Dogfish Head recreated the Nordic grog in October 2013 using wheat berries honey and herbs.
The only difference was that Dogfish Head's brew contains a few hops the bittering agents used in most modern beers.
Dogfish Head's grog is called Kvasir a name that hints at its roots. In Nordic legend Kvasir was created a wise man by gods spitting into a jar.
Cartilaginous fish such as sharks and rays were common by the late Devonian. Devonian strata also contain the first fossil ammonites.
the government has proposed a cull of coastal sharks in response to a swimmer s death,
Although some animals, including sharks, are known to have an electric sense, this is the first time the ability has been documented in insects.
and Flora (CITES) took the unprecedented step of granting protection to sharks and various species of tropical timber tree in their final vote today.
Members of CITES also accepted that several species of shark including the oceanic whitetip (Carcharhinus longimanus), scalloped hammerhead (Sphyrna lewini
great hammerhead (Sphyrna mokarran), smooth hammerhead (Sphyrna zygaena) and porbeagle (Lamna nasus) should be added to appendix II of the convention,
Mike Veitch/Wildlife Photographer of the Year 2013'The fish trap'by Mike Veitch shows a whale shark (Rhincodon typus) actively sucking on a fishing net in Indonesian waters.
Sharks are considered ugly by many people yet many are against finning them. Elephants are considered ugly by many people yet many are against killing them for their tusks.
I have heard never of anyone calling sharks and elephants.**plus I have heard never of anyone calling sharks
and elephants ugly stupid typos@Smokeymcrib My mistake then also you may not have heard of sharks/elephants being called ugly but
I know a particular friend who does think they're ugly. Simply google searching Elephants are ugly/why are elephants so ugly?
Virgin births sometimes occur among hammerhead sharks turkeys boa constrictors and komodo dragons. But nearly all animals engage in sex at some point in their lives.
and coral is beneficial to other species (note that the era where cartiledge fish like sharks developed was a high free carbon era
while a backup is encased in a cage a feature added after an experiment was ruined largely by hungry six-gilled sharks.
whether the top predator is wolves lions or sharks). But there's a problem: the wolves are in trouble.
new sharks. Hemiscyllium halmahera a new species of bamboo shark from Indonesia was described by Academy research associate Mark Erdmann.
According to the paper published this year in the International Journal of Ichthyology sharks of this genus are nocturnally active bottom-living animals
and food webs that did not sustain the abundance of large sharks whales seabirds and seals of the modern ocean.
Indeed large marine animals--sharks tunas whales seals even seabirds--mostly became abundant when algae became large enough to support top predators in the cold oceans of recent geologic times.
Once benign the ditches nucleated dramatic reconstruction of the landscape with the loss of blue crab striped bass and smooth dogfish and the subsequent boom of purple marsh crabs.
Lagoons are known to be ecologically important to a variety of mobile species including manta rays sharks turtles and dolphins.
#Ancient Arctic sharks tolerated brackish water 50 million years agosharks were a tolerant bunch some 50 million years ago cruising an Arctic ocean that contained about the same percentage of freshwater as Louisiana
The study indicates the Eocene Arctic sand tiger shark a member of the lamniform group of sharks that includes today's great white thresher
and mako sharks was thriving in the brackish water of the western Arctic ocean back then. In contrast modern sand tiger sharks living today in the Atlantic ocean are very intolerant of low salinity requiring three times the saltiness of the Eocene sharks
in order to survive. This study shows the Arctic ocean was very brackish and had reduced salinity back then said University of Chicago postdoctoral researcher Sora Kim first author on the study.
The ancient sand tiger sharks that lived in the Arctic during the Eocene were very different than sand tiger sharks living in the Atlantic ocean today.
The findings have implications for how today's sharks might fare in a warming Arctic region
Maybe the fossil record can shed some light on how the groups of sharks that are with us today may fare in a warming world.
Because sharks are aquatic the oxygen from the ocean is constantly being exchanged with oxygen in their body water and that's
The team analyzed 30 fossil sand tiger shark teeth exhumed from Banks Island and 19 modern sand tiger shark teeth from specimens caught in Delaware bay bordered by Delaware and New jersey.
The paleo-salinity estimate for the modern sand tiger sharks is consistent with the continental shelf salinity present from Delaware south to Florida and from the coastline to roughly six miles offshore known hunting grounds for modern sand tiger sharks
which have formidable teeth and can reach a length of nearly 10 feet. The Eocene epoch which ran from about 56 to 34 million years ago was marked by wild temperature fluctuations including intense greenhouse periods
The salinity gradient across the Eocene Arctic ocean that provided habitat for the ancient sand tiger sharks also was found to be much larger than the salinity gradient tolerated by modern sand tiger sharks living in the Atlantic ocean said Eberle.
The Eocene lamniform group of sharks had a much broader environmental window than lamniform sharks do today.
Through an analysis of fossil sand tiger shark teeth from the western Arctic ocean this study offers new evidence for a less salty Arctic ocean during an ancient'greenhouse period'says Yusheng Chris Liu program
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