How do Sharks identify their prey?

Sharks have electro reception, which is a keen sensitivity to electrical impulses. As fish swim around, their movement sends tiny electrical signals through the water. Sharks pick up on those signals as the water passes over a series of jelly-filled pores, which are sensory organs on their head. This electro reception allows sharks to snag prey with deadly accuracy, even in murky water. 

Can Sharks swim backwards?

A shark’s pectoral fins cannot bend upwards like a fish, limiting its swimming ability to forward motion. Unlike fish, sharks cannot stop suddenly or swim backwards. They cannot simply stop and must keep swimming or it will sink. This is because they must force sea water through their open mouths and over their gills to breathe. 

Does the colour of a Goldfish change when kept in a dark room?

The colours of fish are due to the presence of pigment cells called chromatophores which reflect or absorb light. If left in the dark for a period of time, this pigment cells are not activated and gradually change colour.

Why are Dolphins used for medical treatment?

The characteristics of dolphins have given rise to the dolphin assisted therapy (DAT). This has been used as a therapeutic approach to increase speech and motor skills in patients who have been diagnosed with developmental, physical and/or emotional disability such as mental retardation, down syndrome and autism. Many believe that dolphins have human like emotions and the compassion that they are able to give increases self-confidence, social skills and academic achievement in children and others who may be lacking these skills.

How do Octopuses protect themselves from predators?

Octopuses like chameleons are able to change their colour and even their skin texture to blend into their surroundings so that their enemies cannot see them. Octopuses can further hide themselves by spraying ink at an attacker. This dark makes it difficult for an attacker to see the octopus giving it time to get away. Further the ink interferes with the attackers abilities to smell which can further throw of predators like sharks that rely on their sense of smell to hunt. 

Why do Sharks bite humans and leave them?

Why do Sharks bite humans and leave them?

Most sharks like to test their prey before entirely devouring them and that’s why most attacks on humans are just a bite or two. They are known to perform test biting with many familiar and unfamiliar objects in order to determine what kind of object it might be. Humans in any case are not appropriate prey for them as the sharks digestion is too slow to cope with the humans body high ratio of bone to muscle and fat. Even if they attack humans by mistake, a death occurs by loss of blood from the initial limb injury rather than from devouring. 

Why an Electric Eel called so?

Why an Electric Eel called so?

They get their name from the enormous electrical charge they can generate to stun prey and dissuade predators. Their bodies contain electric organs with about 6000 specialised cells called electrolytes that store power like tiny battery. When threatened or attacking pray this cells will discharge simultaneously emitting a electrical charge of at least 600 volts.