4 Introduction 



DEMERSAL: Living on the bottom of the sea. 



FIN RAY: The skeletal rods supporting the fins. 



PELAGIC: Living in the open sea, commonly in the 

 upper layers of the water. 



LANDLOCKED: Applied to fishes normally residing 

 in the sea which have become residents of coastal ponds 

 and lakes formerly accessible to and now cut off from the 

 sea. 



PLANKTON: Microscopic and small plants and animals 

 drifting freely in the open waters and carried by wind, 

 tides, and currents. 



