fter eight days in the wild, four celebrities remain and it's clear that the physical strain is taking its toll. The group are led to an estuary. For a survivor, this is a lifeline which means food, water and more importantly, a means of travel. It does, however, also have its dangers, and in South Africa that means Bull Sharks. The celebrities are split into two teams. Their task; to build a raft that will get them across the estuary safely. The tide is coming in and with it the risk of a shark attack increases. Time is running out. Working in pairs, will it be a case of two heads are better than one, or will heads butt? Staying calm under pressure is key, but can they keep it together?