Baby sharks are known as "pups." Already equipped with a set of teeth and ready for life on their own, baby sharks leave their mother immediately after birth.
Sharks have one of the longest gestation periods of all mammals, with the basking and frilled sharks carrying their young for up to 3 or 3.5 years. Litter size ranges from a single pup or two in great whites, to more than 100 among the whale and blue sharks. Eggs hatching inside the female shark may be fed by a placenta (viviparity), without a placenta (Aplacental viviparity), or deposited into the ocean where they hatch on their own (oviparity).Learn More
Great white sharks grow up to 21 feet long, have a lifespan of approximately 70 years and live in all the world's oceans. In contrast, tiger sharks grow to about 16 feet, have a lifespan of approximately 50 years and are only found in temperate climates, especially around islands in the Pacific. Though somewhat visually similar, the tiger shark also has characteristic tiger-stripe markings, though these are often faded in mature adults.Full Answer >
Shark teeth are identified by analyzing the size, shape and texture of a tooth. While most shark teeth are in the shape of a triangle, the length, width and sometimes the edges of a given tooth can be used to identify the species to which a tooth likely belonged.Full Answer >
Sharks have adapted to their habitat by having streamlined, hydrodynamic bodies. Their skeletons aren't made of bone like other fish but cartilage. This makes their skeletons lighter and more flexible.Full Answer >
As of June 2014, bull sharks are not endangered, but it is likely that their numbers are decreasing. They are widely fished for their meat, hides, oil and fins.Full Answer >