I'm back on the Sea Explorer after having toured Prion Islet. My normal modus operandi has been to download my photos from a shoot, start editing them and then lie down for a while before dinner. On this day, however, the normal schedule is not going to happen. The weather has improved, and now a landing on Salisbury Plain appears feasible. I'm told that we will be having an early dinner, hopping on our zodiacs and motoring to this site, one of the highlights of our trip thus far.