Gulper eel (Eurypharynx pelecnoides) is found in most oceans of the world. This species can reach over 2 feet in length. The long dorsal fin begins over the head and reaches to the tail tip. The tail tip has a red light that attracts other fish. The tiny eye is located at the front tip of the head. This eel appears to eat mostly plankton.

The gulpers are a group of unusual fish that are found at depths over one mile down in marine environments. These fish have a lower jar that appears loosely connected to the fish. This fish also can devour other fish of sizes larger than themselves. Several species live on plankton.

Eels, Order Anguilliformes, includes mmostly marine animals with long narrow bodies. Most species have pectoral fins, but lack pelvic fins. Several species breed near Cuba and migrate to freshwater rivers worldwide to reach full size. There are about 450 species divided into about 20 different families.

Bony fish, Class Teleostomi, are a class of chordates that include the majority of fish-like animals found on earth. They are characterized by a bony jaw and a bony skeleton. They are found in both fresh and marine waters.

Backboned Animals (Phylum Chordata) are the most advanced group of animals on earth. These animals are characterized by having a spinal cord or backbone. Most members have a clearly defined brain that controls the organism through a spinal cord. Fish, amphibians, reptiles, birds, and mammals are in this phylum.

Currently, some taxonomists believe that the fish should be divided into two groups (sharks and regular fishes) and that there are some other primitive groups in the phylum such as hagfish or lampreys.

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.

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