Hello again, I want to take advantage of this, my last diary of this expedition, to explain the reason for so much effort, both human and financial, and the enthusiasm and total dedication that we all share. You might wonder why the MPAs are created and whether it is worth it. I asked myself the same question at one time ... Over many years, I have been able to get to know many protected areas first hand, and I can confirm that they are not just a good idea, but that these days they are necessary, absolutely essential. With this situation, there is an urgent need to create marine protected areas and extend many of those that already exist. The benefits to society are extraordinary, bearing in mind that we rely heavily on marine resources, and that tourism and fishing are the main source of income in many places. Let’s hope that, within a few decades, these Mediterranean waters that we are studying today show the same or greater biodiversity than a century ago.