Shark Newsletter Oct 2018

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white shark mysteries

Why Are Great White Sharks Still a Mystery to Us ?

Thanks to media hype like Jaws and Finding Nemo, white sharks are ocean's most iconic and feared fish. But we know surprisingly little about them.

Much of what we think we know about great white sharks simply isn’t true. They aren’t mindless killers, they aren’t always loners, and they are much smarter than scientists gave them credit in the past.
 Meeting a great white shark in the wild is nothing like you expect it would be. At first glance it’s not the zeppelin beast we’ve come to expect from a thousand TV shows. It’s portly, bordering on fat, like an overstuffed sausage. The world’s greatest predator is little more than a slack-jawed buffoon.
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A great white can go through 20 000 razor sharp teeth in one lifeTIME

While a great white shark’s 300 serrated teeth are an amazing hunting adaptation
 what’s even more amazing is their replaceability. In a lifetime, each shark can grow up to 20,000 of them. 
When this predator comes for you, you don't see the shark, you just see two-inch triangular teeth. For decades this ancient hunting machine has terrified beach-goers across the globe.
This mouth of razor-blades is just a necessary feeding apparatus of a super-sized fish. The great white shark is one of the world’s most notorious predators. But still, it would be nothing without its 300 serrated teeth. They’re designed to rip and grip through flesh, much like we use a knife and fork.  And its jaw crunches down with almost two tonnes of force.
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Bronze Whalers-
the Great Golden Sharks of Gansbaai

"Welcome to Gansbaai the Great Gold shark capital of the world!! .
We currently experience incredible diving interaction with Bronze whaler/copper sharks, a near threatened species more associated with the sardine run and small pelagic fish species here in SA! Such beautiful colouration to them, stunning sharks". 
Bronze Whalers are a social bunch of fast-swimming predators that know that there is safety in numbers. Unlike the solitary Great White Shark, they prefer large groups utilizing their numbers to their advantage both for protection and for hunting. They feed on bony fishes, such as sardines, mullets, hake and soles, as well as other prey such as sawfish, squid and cuttlefish.  Large numbers follow the winter sardine run off the southern Natal coast, of South Africa,  to feast on their favourite prey, millions of southern African pilchard.
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Did you know that some sharks have belly buttons?

The diversity of sharks is just amazing
Sharks have a variety of reproductive types. Some lay eggs (that also come in a bunch of different shapes and sizes depending on the species). Some develop eggs that hatch inside them, producing pups that then develop in the uterus and are born later.
Some shark species give birth similarly to mammals, with a placenta and umbilical cord. The umbilical cord attaches between the pectoral fins and when the pups are born, they’re left with an umbilical scar, effectively a bellybutton, which is visible for a few weeks until it heals up completely
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Amazing shark facts that might surprise you

Great White Sharks are the world's largest predatory fish
 -reaching up to 6 meters in length and are powerful enough to launch their 2 -tonne bodies out of the water. It also makes them the most feared creatures of the sea, to both sailors and sea inhabitants alike. But did you know?
  • Sharks do not have bones
  • Great White Sharks are not all lookalike
  • How can sharks see in the murky water?
  • Why do white sharks roll back their eyes?
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