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appropriate - adj. especially suitable or compatible
continental shelf - n. the area of seabed around a large landmass where the sea is relatively shallow compared with the open ocean. The continental shelf is geologically part of the continental crust.
broad - adj. covering a large number and wide scope of subjects or areas.
drilling - v. produce (a hole) in something by or as if by boring with a drill.
lease - n. a contract by which one conveys real estate, equipment, or facilities for a specified term and for a specified rent
marine ecosystems - n. a complex of living organisms in the ocean environement
offshore - adv. at a distance from the shore
reliant - adj. having reliance on something or someone
tourism - n. the practice of traveling for recreation
unique - adj. being the only one
