Unforgettable swim in the middle of the ocean

This was one of the nicest days during the expedition by now, so we decided to take some time off and go for a swim in the open ocean. The water was incredibly calm and to my surprise, warm. The depth of the ocean at that location was approximately 5,000 meters (16,404 feet). There is something extra impressive and disturbing about that information. It was so beautiful and instead of completely enjoying and relaxing I just had to think about, what else but sharks! The water was clear and appeared to be free of pollution, which made me question if future generations will be able to see this too?