This lifeform is found widely in the Indian Ocean. This lifeform is found widely in the Pacific Ocean.

Chambered Nautilus (Nautilus pompilius) is found in the Indian and Pacific Oceans. This unusual animal has the ability to float on the surface of the ocean by filling the unused chambers in its shell with gas.

Nautilus (Nautilidae Family) contains the famous Chambered Nautilus. This group was very prevalent in the Paleozoic era, but now is represented by a very limited number of species.

Octopus and Squid Class (Class Cephalopoda) is found only in salt water. Several species in this class have rather high intelligence levels.

Mollusks (Phylum Mollusca) are a large and varied group of animals. Some species are found on land; others are found in freshwater; many are found in the oceans of the world. The most familiar mollusks have an external shell surrounding a soft body. Well-known examples of mollusks are snails and clams. The major classes are as follows:
  
   Ablacophora:                  Worm appearing
   Polhyplacophora (Amphineura): Chitons
   Scaphopoda:                   Tusk Shells
   Gastropoda:                   Gastropods
   Bivalvia (Pelecypoda):        Clams, etcetera
   Cephalopoda:                  Octopus, Nautilus
   Monoplacophora:               A recent discovery

Animal Kingdom contains numerous organisms that feed on other animals or plants. Included in the animal kingdom are the lower marine invertebrates such as sponges and corals, the jointed legged animals such as insects and spiders, and the backboned animals such as fish, amphibians, reptiles, birds, and mammals.