You will accomplish your goals by completing the steps listed on the process page:
Discover rare marine species:
By becoming a scuba diver, diving to depths rarely visited by man, and then putting together a photographic slideshow to showcase your discoveries!
Describe two oceanic trenches:
By manning a submarine vessel, diving into the trenches, and then showing a film you've recorded!
Explain the environmental impact of pollution:
By becoming an environmentalist, studying the marine ecosystems, and then preparing a powerpoint presentation to share your findings on what effects pollution has had!