Tuesday, 26 November 2013

What is a shark?

The following definition is from Google.
Shark
noun
noun: shark; plural noun: sharks; noun: red-tailed black shark; plural noun: red-tailed black sharks; noun: black shark; plural noun: black sharks
1.      1.
a long-bodied chiefly marine fish with a cartilaginous skeleton, a prominent dorsal fin, and tooth-like scales. Most sharks are predatory, though the largest kinds feed on plankton, and some can grow to a large size.
However due to what psychologists call “primal fear” a lot of people define sharks in much simpler ways such as long, grey marine creature that has a huge mouth full of very sharp teeth.  (My mom jokes about them being like enthusiastic and extremely curious children that don’t attack humans, but instead “play”. Only problem is that humans are not durable play mates.)
Also below is from Google.
1.    Shark
Fish
2.    Sharks are a group of fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. Wikipedia
3.     
4.    Scientific name: Selachimorpha
5.    Lifespan: 20 – 30 y (In Wild)
6.    Speed: 8 km/h on average (Adult, In The Water, Swimming)
7.    Rank: Superorder
The four most recognised types of shark (out of water and who get mistaken for
each other in the water) are below with their names underneath.

This is the Great White shark or Carcharodon carcharias (Alternative names: white pointer, white shark, white death.) and the shark that is held responsible for most shark attacks in Australia.



This is the Tiger shark or Galeocerdo cuvier. The almost tiger like stripes along the back are part of the reason why they are referred to by that name.




This is the Bronze Whaler or Carcharhinus brachyurus. The Bronze Whaler and Bull sharks are sometimes mistaken for each other for the more defined triangle section at the tip of the tail as well as the more longer, pointed nose despite the colour difference.


And lastly this is the Bull Shark or Carcharhinus leucas. (Alternative names: river whaler, freshwater whaler, Swan River whaler)


All pictures are courteous of the below website.


No comments:

Post a Comment