This is a Powerpoint presentation on the Open Ocean, or Pelagic Zone. I use this in my 12th grade Marine biology class, but it's a semester class, so there is not a lot of detail. It covers the 3 main vertical zones of the Open Ocean: the Epipelagic Zone (Surface), the Mesopelagic Zone (middle) and the Deep Sea. For each zone it discusses physical parameters, gives examples of creatures that live there, and discusses general adaptations that most creatures have who live in their particular zone. You can download a free copy of the notes in a 6 slide per page black and white pdf file first. If you like what you see, you can pay for this Powerpoint presentation.