Interesting Articles

/Interesting Articles

My educational encounter with African Shark Eco-Charters

By | November 8th, 2017|Interesting Articles|

My educational encounter with African Shark Eco-Charters I am a 19 year old Tourism student who needed to complete an internship at an established tourism business in order to complete my studies. Since I have a deep passion for our natural marine beauty and the animal abundance we are blessed with here in False bay, and have lived here for many years, I had decided to go to a local tourist hot-spot, Simon's town. In searching online I came across African Shark Eco Charters and after reading their excellent reviews, mission and vision they were the first company I had approached to complete my internship. I sent out many emails trying to convince busy establishments to accommodate me. The next day I received a swift response from their booking and client liaison officer / manager Nadine Bentley. She stated they were extremely busy with an important deadline, but would be [...]

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Great White Shark….Touch

By | September 6th, 2017|Interesting Articles|

Great White Shark....Touch Ever thought what it would be like to hug a shark or swim on its back like a dolphin does? No? Well not me… So what does a shark’s “skin” feel like? The shark’s sense of touch consists of two forms: the actual contact and the distant touch. These are based in the lateral line. You know how you always see a shark bump an object with their nose? Well, this how they “touch” and it is called nosing an object. The second form of the touching sense is the distant touch. Here the shark uses electroreception to sense where danger lurks and prey hides. It uses the Ampullae of Lorenzini, in the electromagnetic field, having the highest sensitivity to even detect vibrations underneath sand. Okay, so let’s get scientific: the structure of the vibrations manoeuvre through canals: the infraorbital canals, supraorbital canals, supratemporal canals and secondary [...]

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Let’s Talk About It…What to do when your shark trip is cancelled

By | September 6th, 2017|Interesting Articles|

Let’s Talk About It…What to do when your shark trip is cancelled   “We regret to inform you that your shark trip for tomorrow has been cancelled…”Of course, it is the last thing you want to hear when you have been waiting months for your shark trip to eventually roll around; but in reality, it can and does happen from time to time, so when it does, let’s see how we can somehow still make your day a good one! The reason for the cancellation will play a large part in what other activities are on offer, so let’s go through a couple. Firstly, hopefully you booked your shark cage dive early into your holiday, so as that if it is cancelled, for whatever reason, you still have a couple of days to which you will be able to reschedule the booking! This is always good advice whenever booking any [...]

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Let’s Talk About It…The Pacific Sleep Shark

By | May 29th, 2017|Interesting Articles, Tour Happening's|

Let’s Talk About It…The Pacific Sleep Shark The Pacific Sleeper Shark is of the Somniosidae family of shark, which include the giant Greenland Shark. Commonly called “Sleeper Sharks” due to their slow swimming and non-aggressive natures, these sharks have a familiarly look. The Pacific Sleeper Shark is the smallest of the family group, reaching an average size of 3.5 meters (12 feet) while it’s other family members can and do grown well beyond that 7 meters (23 feet) in length! They boast a rounded snout and grey-black skin which is rough to the touch, they have an almost torpedo shape body with low dorsal fins. Being deep swimmers, not much is known about these interesting sharks. It has been recorded though that they enjoy a diet of pacific octopus, sole, Pollock, flounder, tuna and teleost fish. This slow moving shark’s diet is generally determined on where it may find itself [...]

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Can sharks hear?

By | May 16th, 2017|Interesting Articles|

Its a good question, can sharks hear? They don’t have ears…? Well it is speculated that sharks have a very well-developed hearing sense because it works with the lateral line that enhances and detects vibrations. This makes them good at hearing low vibrations frequencies and finding the position of the noise through using the lateral pores. So they can hear prey that is near. And although they may not have ear lobes they do have ears. These ears are small holes on the sides of the head that leads to the inner ear. The inner ear has 3 chambers and an ear stone called an otolith. This inner ear detects gravity, sound and acceleration to locate food. It also helps with balancing the shark and finding its equilibrium. So where is the inner ear located? It is fixed into the frontal skull called the chondrocranium and is made up of [...]

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Let’s Talk About It…Spotted Gully Shark

By | May 11th, 2017|Interesting Articles|

Let’s Talk About It…Spotted Gully Shark Found in False Bay, this shark answers to a couple different names, the Spotted Gully Shark, Sharptooth Houndshark, Sweet William or “Spotty” as “affectionately” referred to by anglers. The Spotted Gully Shark, prefers shallow inshore waters from South Africa to Southern Angola, closer to the sea bed in sandy areas near rocks, reefs and gullies. This tough little shark grows to about 1.7 meters in length with the females out-growing the males and boast large rounded fins; it has a short blunt snout and is characteristically grey or bronze in colour with plenty of its signature black spots, while the underside of the shark is paler. Being a nocturnally active shark, the Spotted Gully Shark enjoys a diet of crustaceans, bony fish and cephalopods. They have been seen gathering together during the day in shallower waters, and it is believed that they do this [...]

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The Shark Eye…..eye eye Captain

By | May 2nd, 2017|Interesting Articles|

In keeping with the theme of senses, today we’ll take a look at the shark’s eye. A shark’s eye is as advanced as its hunting technique. It consists of two duplex retinas: cones and rods. Cones enable you to see in the colour whereas rods help the eye to adjust to light and dark by dilating and contracting the pupils to allow more or less light in. This allows the shark to see up to 15 meters long. The shark’s eye is made up of the normal elements like a human’s eyes such as the cornea, lens, retina, pupil and iris. The retina has two areas: the day vision and the low-light vision. The retina allows the shark to see better in darker and murkier water - even the silhouette of wounded seals in murky water. I actually watched a documentary where sharks adapted to using the light of the [...]

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Let’s Talk About It…Fukushima

By | April 24th, 2017|Interesting Articles|

Let’s Talk About It…Fukushima Fukushima Ocean Beach SF According to The Guardian, “Extremely high radiation levels have been recorded inside a damaged reactor at the Fukushima Daiichi nuclear power station, almost six years after the plant suffered a triple meltdown.” With atmospheric readings as high as 530 sieverts an hour having been recorded inside the containment vessel of reactor number 2; which is one of three reactors that experienced a meltdown in March 2011, is it any wonder the sea and everything in it is out of sync!? A single dose of one sievert is enough to cause radiation sickness and nausea; 5 sieverts would kill half those exposed to it within a month, and a single dose of 10 sieverts would prove fatal within weeks.  Even with a 30-percent margin of error being taken into account, the recent reading, described by some experts as “unimaginable”, is far higher than the [...]

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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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