If your floor really needs more than that, consider a low-cost alternative to refinishing: Apply a fresh topcoat of nonyellowing polyurethane, found in the flooring section of a home improvement store. Be sure to very lightly sand the floors with a pole sander and fine-grit sandpaper.
There are 440 different species of sharks in the world today classified into eight different orders described below with some examples of known sharks species for each group.
There could be a billion or more sharks in all the oceans around the world. Up until the 16th century, mariners called sharks âsea dogs.â Today, scientists believe there are more than 400 different species of sharks in the world. The smallest of these â the dwarf lanternshark â is less than seven inches long.