African Shark Eco-Charters

/Tag:African Shark Eco-Charters

Digestion of a great white shark

By | April 24th, 2017|Interesting Articles|

Digestion of a great white shark Seeing sharks close by gives me butterflies in my stomach (wait… that’s love?), okay then they make my stomach growl (nope, that’s when I’m hungry)… Oh, I got it! Sharks turn my stomach inside out. No! They turn their own stomachs inside out… They can’t actually vomit instead they do something similar to vomiting: gastric eversion. This is where the stomach relaxes and oesophagus contracts to “clean” any indigestible food like licence plates, parasites or bones from the stomach lining. Let’s take a look at how a shark digests its lovely not broken seal prey. The digestive system can be separated into four sections: the oral cavity; the foregut; midgut and the hindgut. The Oral Cavity   The oral cavity is basically the mouth section consists of those lovely pearly whites, mouth, and pharynx. Here there are no digestive juices secreted, as the shark [...]

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Muscle and Movement of a great white shark

By | April 24th, 2017|Interesting Articles|

Muscle and Movement Did you know sharks can fly? Okay, not really… but the microscopic grooves, or riblets, in shark’s skin inspired the construction of an aeroplane. Did you also know there is a material created that is similar to shark skin to prevent algae settling on the hull of ships? And engineers are attempting to integrate it into hospital coatings on surfaces to reduce infections and bacterial growth. A Great White tends to attack from beneath and behind therefore it needs to be fast and stealthy to catch prey. So let’s delve into Mother Nature’s design into an apex water-based predator. A Great White shark is shaped liked a torpedo – a fusiform body. It is cylindrical in shape with narrowing edges such as the tail and keels, called caudal fins, on the side of the tail which is crescent moon shape. The purpose of this shape of the [...]

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A great white ” nose” best

By | April 24th, 2017|Interesting Articles|

A great white " nose" best Have you ever wondered how a shark is so accurate and can smell something miles away? Maybe its because it smelled something fishy? Who nose? But let’s take a look at the tip of the issue. Did you know touching a shark’s nose sends them into a trance-like state? Please DO NOT EVER try and touch a shark’s nose – EVER (including in a cage!). Ten fingers, ten toes and smiles are what we want the most. Since we are at Blog number 5 I thought I’d switch it up and talk about the big FIVE senses starting with the smell or nose. Actually, sharks have seven senses – which includes the Ampullae of Lorenzini and the Lateral Line A shark is able to detect scents from far away – up to 1ml of blood in 100l of water. This is done through the [...]

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Let’s Talk About It…Soup fin or Vaalhaai Shark

By | April 21st, 2017|Interesting Articles|

Let’s Talk About It…Soup fin or Vaalhaai Shark Found in False Bay though not exclusively, as it is rather wide spread in temperate waters, this shark is family of the houndshark and has many names; Tope Shark, Vaalhaai, School Shark and Snapper Shark. It is also sometimes referred to as the Vitamin Shark, as its liver is very high in vitamin A. And as for the name; Soupfin Shark, you would have guessed correctly if you had guessed that they are fished for their flesh, which is eaten in countries from Greece, Mexico to Britain and of course Asia.   Reaching a maximum of 1.75m in the male and 1.95m in the female of the species, this shark is small, kind of bluish in colour, with a white under belly and a shallow body and longer snout. It has a crescent shaped mouth with backward facing, serrated teeth, while the [...]

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Shark Skeleton

By | March 29th, 2017|Interesting Articles|

The Shark Skeleton Have you ever wondered what the inside of a shark looks like? No? Well I have. Interestingly a shark doesn’t actually have bones or a skeleton- per se. Did you know that, like a tree, you could tell a shark’s age by counting the rings in their bones? And that they aren’t like a normal piece of snoek with thousands of little bones because they do not have true bones like other fish. This is also, why a ray can “flap” like a bird. A shark is in fact made up of a lighter, flexible cartilage that is more elastic to allow them to bend and swim in a tight circle. Some areas are harder, or more calcified, and softer for different functions such as a soft snout to absorb hard knocks better. This cartilage is believed to have an agent in that may be important to [...]

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Let’s Talk About It, The Orca

By | March 24th, 2017|Interesting Articles|

Let’s Talk About It, The Orca   With all the “boo-ha-ha” in Gansbaai, regarding the appearance of 4 Orcas in the bay, which seemed to coincide with the disappearance of the Great White Shark population from the famous Shark Alley, I thought I would take a deeper look into this phenomenon, of course only once the sharks had returned. There seems to be differing beliefs here, some on the side of the Orca, saying they are not responsible for the disappearance of the Great Whites, as they are not a threat and others who believe they are a threat and the sole reason for the Great White Shark’s game of hide and go seek. Both sides have a fair argument and both have proof to back up their claims. In False Bay in 2014, ASEC had many successful trips, filled with plenty shark activity out to Seal Island, and the [...]

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Let’s Talk About It…Sandbar Shark

By | March 8th, 2017|Interesting Articles|

Let’s Talk About It…Sandbar Shark The Sandbar Shark is found in temperate and tropical waters, from the Western Atlantic, between Massachusetts and southern Brazil; in the eastern Atlantic from Portugal to Zaire; and in the Indo-Pacific from South Africa, our very own False Bay and KZN to the Galapagos and from Vietnam to New Caledonia. Also occurring in the Red Sea and Mediterranean, this shark is gorgeous. Not taking anything away from the others, but this little guy is just a stocky, solid shark, makes me think of a Staffie. He gets his name from being blue-greyish brown in colour with a paler underside, as with most sharks. He grows to a maximum of 2.4 meters (240 centimetres or 94 inches) and has a large dorsal fin for its body! He has almost cat-like eyes, and a lovely smile. His skin is thick and tough, which sadly makes it a [...]

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Let’s Talk About Shark Cage Diving with ASEC

By | February 17th, 2017|Tour Happening's|

Let’s Talk About Shark Cage Diving with ASEC BE A PART OF THE GREAT WHITE SHARK “ULTIMATE AIRJAWS” EXPERIENCE AND JOIN US ON ONE OF OUR COMBINATION TRIPS OUT OF FALSE BAY – SIMONS TOWN Book the ultimate in adventure experiences with a combination Great White Shark breaching, viewing and cage dive trip out of Simons Town, which is a mere 45 mins drive from the centre of Cape Town. Take the Great White Shark cage dive to another level with scuba, no experience necessary as we make use of the Hookah method, but a rudimentary understanding and swimming ability is a must. We pride ourselves in our eco-friendly approach and passion of the Great Whites and their natural predatory behaviour. Our trips offer insights into this wonderful world of the Great White Shark, from both the boat and cage, with a wealth of knowledge to be shared, from our [...]

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Let’s Talk About It…Puffadder Shyshark

By | November 24th, 2016|Interesting Articles|

Let’s Talk About It…Puffadder Shyshark Found in False Bay, amongst other areas in the Western Cape through to Angola, this shark is a species of catshark! What? Catshark, really? Yes, really and not because it looks like this! It is also known as a “Happy Eddie” but that is easier to explain, as its scientific name is Haploblepharus Edwardsii, you can see how that came to pass right? A small shark, growing to a maximum of 60cm in length (24 inches), it can be found at depth of up to 130 meters (426 feet) in rocky bottoms or habitats. It is slender with a flattened body and head and covered in little white spots all over its back. Various hues of brown are patched onto its little body. Not to be confused with the Natal Shyshark, or “Happy Kitty” as it is sometimes referred to … Haploblepharus Kistnasamyi, get it? [...]

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Let’s Talk About It…Shortfin Mako Shark

By | November 24th, 2016|Interesting Articles|

Let’s Talk About It…Shortfin Mako Shark Another amazing shark to be found in the waters +- 25 miles off from False Bay amongst other temperate waters is the Shortfin Mako. Not to be confused with its cousin, the Longfin Mako; which grows to an average of 4.5 meters, the Shortfin Mako grows to a maximum of 2.5 meters weighing in at approximately 100 kilograms. As is the fact of the Longfin Mako, the Shortfin Mako is also exceptionally fast, the cheetah of the ocean if you will, reaching and surpassing 97 kph (60 mph) for extended periods of time. Sometimes confused for a smaller version of the Great White Shark, a major identifying factor, are its scary razor sharp and strange looking teeth, which even when the Mako closes its mouth, are still visible! And even though “Flash Gordon” of the seven seas, looks scary, with those teeth, there are [...]

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