How many senses does a shark have?

Water reminds me of one of the most amazing animal "SHARK". There are around 400 different types of sharks but, the researchers think there are more types yet to be discovered. Most of them are harmless.Usually People would rather not come face to face with a shark, which isn't surprising at all.
They are different from other fish. Sharks have no bones' skeleton. Instead their skeleton is made up of a tough, flexible material called cartilage. It is the material that shapes human ear.
Sharks have superb senses. They can smell, taste, touch, see, and hear, but can also pick up electrical signals generated by their prey. They are sophisticated hunters with remarkable senses and bigger brain than most other fish. They can easily notice the movements or vibrations made by other animals even if it is hundreds of feet away.

*Sense of smell

Smell is an important shark sense. Like humans, Sharks smell with their nostrils, but they don't breath through them. They uses its stunning sense of smell to detect bleeding or injured animals that make an easy prey.Sharks are sometimes called "swimming nose", they can even smell One drop of blood diluted in water, which can easily boost up their temptation. This proves that it's smelling sense is extraordinary.

*Eye spy

Sharks have exceptional eyesight. Just like cats their eyes glow when light shines on them. The eyes are usually located on each side of their heads although some sea-floor dwelling sharks have eyes on the top of their heads.
Sharks can see ten times better than humans can see in dim light. Their vision is excellent in the night which allow them to hunt easily. They can see well in the dark because a mirror-like layer at the back of each eye bounces light rays back. They also see well during the day and have pupils that adapt different amount of light, just like ours. When the iris is open, the pupil gets larger and allows more light to get in but if the iris is close, the pupil gets smaller allowing less light to enter. This is unusual in fish.

*Hearing noisy sea

Sounds travel better in water than on land. The sea is full of noises, such as shrimps snapping. However, sharks do not make much noises themselves, apart from crunching up their prey with their big and sharp teeth. Their sense of hearing is a big help to find their prey. They can hear the sound of splashing made by an injured fish or mammal from more than 250 m (700 ft) away. The ears of sharks are difficult to recognize as they don't have the outer ear flaps of cartilage that our ears have.

*Taste

Once there is food inside a shark's mouth, it uses the taste buds and if it does not like the taste of what it's eaten - it rejects the meal and spits it out. Although not all sharks have tongues.

*Touch

Sharks have a pair of feelers, called barbels, on the end of their snout. These barbels help them to feel and taste if the taste receptors are present on their them. Nurse sharks, bamboo sharks, and wobbegongs are amongst those who have barbels.

*Vibration detection and Electroreception

Sharks use a line of sensory cells (Lateral line) to detect the vibrations in the water. Each sense cell sits in an opening that contains tiny hair. These hair detect vibrations in the water made by prey or a predator.
The most amazing sense of all is the ability of detecting the weak electrical signals in their surrounding. This ability could be one of the reason of their survival through the millennium. This sense is also know as the sixth sense of a shark. The special pores on its face helps to receive the electrical signals. Thus, they hunt precisely underwater.