After our buddy check and pre dive plan myself and Chris started to do SS3, underwater Navigation. We swam on the surface to a bouy approximately 50 meters off shore and back on a reciprocal bearing. We then swam to the archway before desending to the sea bed. I then had to swim 25m from a start point and on a reciprocal bearing find my way back to the start point. We did this twice on diferent headings before swimming through the archway and around the head before returning to the natural harbour. The viz was fairly good and there was a bit of motion. I enjoyed the dive but didn't see any great variety of life. Some small fish, a few star fish and some sea urchins.