Conger eels have a nearly cylindrical body (which becomes compressed posteriorly), very well developed pectoral fins and a fairly large gill opening on the lower half of the body. They do not have scales and their lips have a free margin on the side. Congers are often called White Eels in the Hawaiian Islands and were an important food source. Congers usually have large eyes and are known to be nocturnal feeders. Having distinctly small teeth, they usually prey on crustaceans and fishes.
The following are three species of congers found in shallow-waters of Hawaii, two of which are endemic: black margin conger (Endemic), Hawaiian mustache conger (Endemic), and Barred Conger.
Hawaiian garden eels belong to the same family as congers and are typically found in sandy areas where strong currents occur. Unlike conger eels, the Hawaiian garden eel feeds on plankton and more abundant at depths of about 80 feet and deeper. A very shy species, they sink into the sand when approached. A cautious, slow-moving diver might be lucky enough to spot thousands along steep sandy slopes, waiting to feed on drifting plankton. Reaching lengths to about 1.5 feet, the Hawaiian garden eel is endemic to the Islands.
*Due to the constant rotation of animals back to the ocean, the presence of any specific animal cannot be guaranteed.