Ocean Crossword Puzzle

QUESTIONS LIST: aqualung : used for an underwater breathing apparatus, sonar : a method or device for detecting and locating objects especially underwater by means of sound waves sent out to be reflected by the objects, submersible : a usually small underwater craft used especially for deep-sea research, cousteau : made huge contribution to our understanding of oceans, oceanographer : a science that deals with the oceans and includes the delimitation of their extent and depth, the physics and chemistry of their waters, marine biology, and the exploitation of their resources, ecosystems : the complex of a community of organisms and its environment functioning as an ecological unit, ocean : the whole body of salt water that covers nearly three fourths of the surface of the earth, sound waves : longitudinal pressure waves in any material medium regardless of whether they constitute audible sound, reef : a chain of rocks or coral or a ridge of sand at or near the surface of water, confident : having or showing assurance and self-reliance