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.
Sexual reproduction in coral and sea anemones goes through a larval stage. This larva is called planula. Many marine animals are sessile or practically sessile, including sponges, coral and sea anemones. The mobile larval stage of their life cycle provides better distribution of these species across spaces.1  Image Diversity: planula.any marine animals are sessile or practically sessile, including sponges, coral and sea anemones. The mobile larval stage of their life cycle provides better distribution of these species across spaces. 1  Image Diversity: planula.