Great White Shark Tours November Newsletter

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Twos white sharks - Infinity Films

   Why Great White Sharks Getting Smaller Should Scare You

I’d guess that if you told the average person that Great White Shark size was declining, they probably wouldn't be too upset. But in reality, this trend is incredibly dangerous for their populations and the ocean ecosystem as a whole. Though it seems like a simple concept, the idea of size is much more than just a number. Instead, it is a strong influence upon most every aspect of the organism, helping to determine how to adapt to fit its particular niche. In the case of Great White Sharks, its size is essential to its status as an apex predator of the oceans.
There is an subtle but noticeable decline in size. This pattern, if real, is cause for concern. Though a slightly lower size wouldn’t be a big deal on a functional level for an individual Great White Shark, on a population level, the decline in size indicates a shift in the percentage of sharks that are of reproductive age. Therefore, as the average size decreases, so do the number of sharks that can pup each year. As a species, these organisms are vulnerable as a result of their slow growth and whopping 15-year wait until maturity.

This graph also seems to indicate a slight increase in size from about 1960-1980. Though there’s not a complete explanation as to why this happened, it’s possible that the decrease in fishing during World War II may have given populations some time to recover, or perhaps this is just an effect of there being fewer sizing reports that this time. 

Bottom line: It seems that Great White Sharks are now facing their greatest pressure in 16 million years – humans.  After surviving this long in the delicately balanced ocean ecosystem, the decision is now in our hands as to whether to push these sharks into extinction, or create a system to protect these crucial apex predators and allow their populations to recover. Declining Great White Shark sizes should be an indication that we need to reverse our thinking. Rather than protecting ourselves from sharks, we need to protect sharks from humans.
Source: The Story of Size

seasick banner

   I'm seasick !! NOW What ?

Apex Predator the boat at sea


What is the definition of misery? Answer: Seasickness

But what is sea sickness?  Motion sickness is a generic term for the discomfort and associated vomiting induced by a variety of motion conditions, in this case, a boat.

Why do you become seasick?  It's because your feet are telling your brain that you're on solid ground, but you're really rocking and rolling on the high seas. Your brain gets confused; you get sick.

Fortunately, you don’t have to abandon ship. Sea sickness and the many factors that affect it can be largely controlled.

Here’s how:

•    Look at the Horizon 
•    Stop tinkering with your camera, i pad, mobile phone and equipment 
•    Follow your nose – Motion sickness is often caused by bad smells
•    Avoid other seasick people at all cost.
•    Watch what you eat 
•    Chew gum and eat sweets 
•    Eat Only Saltines 
•    Ginger –chew it, suck on it or dilute it in      tea  
•    Tame your tummy. Have a Coke. 
•    Pop a pill. 
•    Try wearing an anti-nausea band. 
•    Wear a patch.  
•    Don't try to read.
•    Close your eyes
•    Be clean and sober
•    Drink water 
•    Monitor your breathing 
•    Relax, stress will make it worse
•    Watch for symptoms. .
•    Plan ahead.
Blue seasick waveI'M SEASICK: NOW WHAT?
• If you feel the urge, let it go. 
• Don't use a toilet. Or, a trash can. 

What happens if you do get seasick?
Understanding that you aren't really sick, just out of balance, is the first step to curing yourself. Don’t be embarrassed, you aren't the first and you won’t be the last!

Bottom line: When you get seasick on a boat..find a tree and sit under it

Read the full article HERE



NCISNCIS: Los Angeles’ season 8, episode 7 review: NSA agent becomes shark bait

The man was identified as an NSA agent and some of his coworkers were missing in Los Angeles. The team took on the case to find the killers and save the agents. Intentionally misled by one of the NSA agents found alive, the team first suspects ISIS of the murder, but quickly realize it has the markings of the Mexican drug cartel. Digging deeper, one of the NSA agents stole $17 million of the cartel’s cash and is being hunted for the return of the funds.
Source: Cartermatt

Lydia the sharkHas teeth, will travel: Look out for Lydia the great white shark

The 4.4-metre, 900-kilogram female shark has been wearing a satellite tracking tag since March of 2013 when the non-profit group Ocearch caught up to her off Jacksonville, Fla.
On Friday morning, she surfaced about 480 kilometers off the coast of Nova Scotia and she appears to be on a course that would take her toward Sable Island  where there are plenty of seals. Seals are a choice food for great white sharks

Lydia is fitted with a dorsal fin satellite tag that registers her position each time she surfaces Scientists aren’t sure why the sharks surface. “She’s one of these nomadic white sharks that seems to wander a lot more than our other ones do.” The big nomadic journeys that she’s exhibited really baffle scientists.”
Anyone who wants to track Lydia’s movements can use the Internet to follow her in real time.
Source: Local Express

Megamouth toothOldest Megamouth Shark on Record Had Chipped Tooth

About 36 million years ago, a shark the length of two upright pianos chipped and lost its three-pronged tooth, possibly while crunching on a bony fish, a new study finds.
Based on that tooth, paleontologists have been able to name a previously unknown ancient species of megamouth shark.
The newfound species is the oldest megamouth shark on record, and pushes back the existence of megamouth sharks by 13 million years. The distinct shape of the ancient tooth — which looks like a pitchfork with a prominent middle point and two side cusps — indicates that megamouth shark ate small fish, likely "by impaling them on the taller centrally placed crown," said study co-author David Ward
"It has been speculated that [the two side cusps] help shred the fish when the shark thrashes its head around, allowing the fish to be freed from the teeth and swallowed," Ward added.
Source: LiveScience

Something in the water

Sharks have a reputation (at least in popular culture) for being fearsome creatures, prone to attack with their sharp, scary teeth. But despite all the interest surrounding sharks, there are many misconceptions about these predators and the important role they play in marine communities. 

Here are five  myths about sharks BUSTED!

white shark underwaterMyth #1: All sharks eat people
False. Actually, they don't. In fact, majority of sharks eat fish and invertebrates like squid. Shark attacks normally happen by accident due to poor visibility in the water, which is why there are so many more cases of people being bitten by sharks rather than killed by them..

Myth #2: Sharks aren't clever and have tiny, walnut-size brains
False. Sharks are actually one of the most intelligent creatures in the ocean, thanks to more than 400 million years of evolution. The animals used to be considered unintelligent, but in recent years scientists have found that sharks can display complex social behaviors. 

White shark teethMyth #3: All sharks are big and scary, and have lots of sharp teeth
False. There are more than 450 species of sharks, and they come in all shapes and sizes. The deep water dogfish shark is a tiny 8 inches (20 cm) long, while the whale shark can grow to be more than 40 feet (12 meters) long. Great white sharks, on the other hand, can deliver fatal bites with their rows of 300 serrated, triangular teeth. 

Myth #4: If you're attacked by a shark, you should punch it in the nose
That's probably not a good idea. David Shiffman, a shark scientist at the University of Miami's Abess Center for Ecosystem Science and Policy suggested the best way to escape is to go for the shark's eye. Sharks have an eyelid-like barrier to protect them from prey thrashing around in their jaws, but it's not designed to shield from fingers.
White shark eye roll
Myth #5: Nothing eats sharks

While the largest sharks, such as tiger sharks and whale sharks, have very little to worry about from predators, the smaller sharks are not so lucky. Some shark species are incredibly small, and so they can make handy snacks for larger species. A few marine mammals, including orca whales, prey on sharks, too. In reality, a shark's biggest threat comes from humans
Source: LiveScience
Read more interesting shark facts here

 
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