What is Hydroseeding? Hydroseeding is a method that can be used for planting grass for purposes of erosion control, or to grow new lawns entirely; it has been around since the 1950s. It is also an efficient, inexpensive alternative to laying sod in an area where grass or a lawn is desired. Hydroseeding can also be referred to as hydraulic mulch seeding, hydromulching, or hydroseeding. How does it work? The machine that actually does all the work for you is called a hydroseeder.
The skin of a shark is made of tiny denticles, which are made of the same enamel that teeth have, meaning they too can fossilize. Some more primitive sharks have spines in their fins that will fossilize. Finally, shark feces, or coprolites, are sometimes found preserved.
A shark's body is â of course â composed of many different types of tissue, of which cartilage is but one. If I may be permitted to presume, I think that what you meant to ask is something along the lines of: for sharks, what is the evolutionary advantage of having a cartilaginous skeleton?