If you've ever googled "Algarve" you've probably seen the region's most famous sea cave:
http://i.imgur.com/4RvoZ1B.jpg
I want to go. It seems that the most common way is a tour in which you stay in the boat. Not for me. Is there anything preventing me from swimming to it? It's at 37.087229, -8.423707. Looks very close to Benagil beach. Will someone stop me?

