A third level can be defined to identify a particular host server at the Internet address. In our example, www is the name of the server that handles Internet requests. (A second server might be called www2.) A third level of domain name is not required.
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named for the anemone, a terrestrial flower.Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. sea anemone is a sessile polyp attached at the bottom to the surface beneath it by an adhesive foot, called a basal disc, with a column-shaped body ending in an oral disc.
Aggregating anemones are easily identified as they are much smaller than the other two species. They also live in large colonies with individuals tightly packed together. The Giant Green anemones usually live in deeper water and are rare in southern California tidepools. Solitary anemones can be differentiated from the Giant Green as the tips of the tentacles of the Solitary are pinkish in color. Solitary anemones also have darker lines on the Oral Disc where the Giant Green anemones do not.