As of now no one knows for sure whether sharks doze off or keep on swimming continuously. So it’s a matter of debate that hasn’t been settled yet. But what’s clear is the fact that sharks do indeed have restful periods. Scientists have reported some sharks to remain at stationary…

As a shark sails underwater, it takes in water into its mouth. This water passes over the gills of these fishes and then seeps out of it thanks to the gill slits on either side of the shark. It is often referred to as passive breathing or more precisely ram…

The scientists were puzzled about the reproductive success of whale sharks for years. In the past, they did not have any idea about the mode of reproduction of this species. Whether it bears live young or lays eggs, it was all a mystery. But in the end in 1955, they…

Whale shark is by far the biggest living fish which means its mouth would be 4.9 feet across. However, that doesn’t necessarily mean that it poses significant threat to divers. Quite the opposite, this shark appears to be easy to control. What’s more interesting, whale shark is often seen swimming…

No one knows why Megalodons became extinct. Whether lack of food, drastic environmental changes or some other combination of factors led to the death of Megalodon’s pups, we just don’t know. Given the massive size of 52 feet, its presence would certainly have made it a lot fearsome for humans…

Unlike chimaeras and rays, sharks are unable to see colors and so they are color blind. There are essentially two kinds of specialized cells in the retina of an eye that can pick out light. These cells are called photoreceptors and the two main cell types in vertebrates are rods…