The Megamouth Shark

  The megamouth shark is the most recently discovered shark. It was first found in 1976, when some fishermen hauled up their nets to find a dead creature in them!! It was 5.5m long and weighed 1215kg!!
That is a lot of shark!! The megamouth has a very cunning way of luring fish and krill into its mouth: it has luminous lips!! That may not sound amazing or helpful, but small sea creatures are attracted to light so they swim towards it and get eaten by the shark. If that doesn't amaze you I don't know what will.
As they are so rare, we know very little about these sharks. As of 2012, only 55 have been seen in a wide range as they have been found in the Atlantic, Indian and Pacific Oceans.

This is the most famous photo of a megamouth shark.
This was the first one ever o be seen by man.

Two Headed Bull Shark Found of Florida

On the 6th of March this year, a fisherman found a two-headed bull shark embryo of Florida Keys. The shark was one of roughly a dozen found with two heads worldwide since people started recording their findings. A two-headed shark is made when twin shark pups do not finish separating from each other. A creature like this would not survive long as the heads may kill each other as they fight to get the best food without realising that by killing its twin head, it kills itself. This simple growth problem occurs not only in sharks but in all types of creatures, humans included. This is the shark equivalent of siamese twins.

The two-headed embryo being weighed by a 'SHARKDEFENSE'* member

*SHARKDEFENSE is a shark protecting society in Florida.

The Bull Shark

The bull shark is, without a doubt, the most dangerous shark to humans. They are the most aggressive shark known to mankind as they have been known to kill a wading animal or human on sight, even if they won't eat the body afterwards, without provocation.
Despite the vicious, menacing atmosphere that surrounds this species, they are truly one of the most fascinating branches of the family of sharks. This comes down to being one of the only two sharks that can survive in rivers as well as the oceans and seas of the world. For a long time, it was known as the only shark which could survive in both of these completely different conditions until a fisherman in Australia caught a speartooth shark which, due to the fact they had been thought extinct for 108 years, was met with great fanfare. Most sharks explode if they enter a river due to the lack of salt in the water, yet the bull shark, and its talent-sharing Australian counterpart, do not. Scientists remain unable to figure out how they do this.
Bull sharks can grow up to 2.4 metres long and can weigh up to 98 kilograms. They spend most of their  lives at depths of about 30 metres below the surface when they are not in rivers. They live in the Pacific, Atlantic and Indian oceans and can venture up to 2,500 miles up the Amazon river and have also been found in the Mississippi, Ganges and Zambezi rivers but the distance between them and the ocean in the last three rivers mentioned has never been measured.

A bull shark stalking the river bed of the Amazon surrounded by baby bait fish which
are too small for it to eat.