11 amazing things to know about sharks

by spotmydive

The shark is a myth all by itself, movies have made their apology but is that animal so dangerous to affraid us ? Let’s kill those legends that sometimes prevent us from living certain experiences and get ready to use your palms!

1. What is the most dangerous shark in the world?

Technically speaking, the most dangerous shark is the megalodon even though it disappeared millions years ago. This shark is an extinct species considered the most dangerous predator in the history of vertebrates and popular beliefs exalt our primal fears to make the buzz … These fossilized remains suggest that it could reach 20 meters, a version of the white shark but in very worse scaring way … Today the tiger shark can be considered as the most dangerous, it measures only 3 to 4 meters for an average weight of 500 kilos. This predator eats everything waste, plastic wood, metal, carrion but also fish, dugongs, turtle dolphins and sea snakes and whales when it is in good shape. He is the main culprit of the attacks on the man in the tropical zone and he does not need to be provoked, he can attack the swimmers and the marine hunters : this shark is not a myth, it is really dangerous !

2. Is the shark a fish?

Despite its size and reputation, the shark is a fish and not a mammal. Despite their similarity unlike the dolphin or whale, the shark does not carry a baby in his belly, he breathes in the water with its gills like a fish in the water.

3. Do sharks lay eggs?

The mode of reproduction of sharks is varied:
Oviparous sharks: usually large, they lay eggs directly in the water
Ovoviviparous sharks: Breed by eggs too, but these develop and hatch inside the mother’s body.
Viviparity: Scopes range from 2 or 4 small to a few dozen young depending on the species, and the gestation is often over a year it can go up to 24 months, the sea dog, for example. The embryos of viviparous sharks develop in the womb of the mother from the nutrient reserves of the placenta, and young animals are born fully formed.

4. Where do tiger sharks live ?

The tiger shark also nicknamed the garbage shark lives in deep and subtropical waters.

5. Where do Hammerhead Sharks live ?

The great hammerhead shark Sphyrna mokarran is a species of fish that lives in some seas and tropical oceans.

6. What is the largest shark in the world ?

You could guess, the whale shark is the largest shark in the world, the record of his species is 20 meters and it weighs is 34 tons ….

7. Is the shark mammalian or fish?

Small test if you have read all the questions see question 2.

8. What is the smallest shark?

Three species fight for the saddest rarest smallest shark record: the dwarf shark, the pygmy cat shark and the elven shark shark. It is difficult to evaluate because their size depends on their sexual maturity. But it seems that according to the figures the elven shark holds the golden globe of the shark miniature …
The elven is a shark that evolves at great depths, between 200 m and 500 m on average. But, it can go down much deeper. It is part of the family of Etmopteridae and the order Squaliformes. The female is larger with a size that varies from 19 to 20 cm. The largest female captured was 21.2 cm tall and the adult male is 16 to 17.5 cm tall, but size does not matter. One captured male specimen measured 19 cm.

9. Which is the fastest shark?

The speedy Gonzales of the seas is the Mako shark, the fastest shark he swims on average at 75 km/h. The mako shark or shortfin mako shark Isurus oxyrinchus is a species of the Lamnidae family and is full of surprises. According to some observers it could have speed peaks at 100 km / h and jump 10 meters out of the water, a real racing car!

10. Which is the slowest shark ?

The slowest shark is the shark from Greenland, and no one can compet with his slow level of speed at max it rushes to 0.74 kilometers, according to the competition it starts with a deep handicap ! Moreover, he hunts after all because he does not live on love and fresh water, he waits for his prey to be asleep: very romantic … Yes, if for years rumor said that it fed on carcasses, studies have shown that the shark of Greenland is fond of the seal that is used to sleep in the water to escape the bears: what a pity! It lives more than 500 meters deep in the polar waters of the North Atlantic and North Pacific and can measure up to 7 meters. If it is not the fastest shark, it is the oldest sea bass and longevity exceeds 272 years. I heard into the grapevine and a rumor would speak of a shark of 512 years but it seems that the figure is overly optimistic …

© Photograph: Julius Nielsen/Science

11. Does human blood attract sharks?

The shark can smell blood for miles around, and it is often recommended to women who have their period not to dive: is this belief really true? In theory yes because it recognizes the smell of blood but it is mostly attract by the one from fish and marine mammals! It is important to note that women are 9 times less attacked than men, so even if their olfactory abilities can detect minor amounts, the shark is not fond of human blood

12. How to react if a shark approaches me?

The adventurers of the seabed will always tickle the danger for the sake of risk, but it is better to prevent than to war! I will give you some tips to avoid them. First of all, avoid wet suit too shiny, a shark could take you for a fish and avoid diving at night, they often hunt at night according to their species. Otherwise for the less kamikazes if it happens follow those instructions: The essential steps to follow:

1.The base is to keep calm, it is not stirring by making bubbles in the water that will improve your case. The panic generates sudden movements and the shark will take your gestures for a potential threat. Do not run and do not speed stay zen but not too much because if you make the death he will bite you anyway …

2. If you see the shark spinning around you, take advantage of to reach the shoreline smoothly without any swirling or splashing: if possible swim on your back with breaststroke so it does not take you to a seal on a surfboard …

3. If the shark approaches you do not hesitate, hit it with a good uppercut at the gills or eyes, for the girls scratching it works too! Do it until it leaves, and do not try to gain momentum in the water it’s useless. When the shark will leave, get out of the water immediately or get back on your boat because he will come back for revenge for sure!

Written by Florence Fifi