Okay, all right, I had a relapse, so what? Not past 50, I promise! Also, I went half a year without making any quizzes in this series, that's not bad.
Two of these are atolls I had listed for previous quizzes, but where I couldn't see any islands on the satellite image and ultimately rejected them. They do seem to have non-permanent islands, however, so I changed my mind and included them here because I was too lazy to go back and change all the quizzes since #27.