Today's Wall Street Journal has a long piece about "Galapagos Under Siege." Tourism is part of the problem there, especially with large ships now coming in, but tourism can also help protect the environment there. We paid a $100/person entry fee for the national park and it wouldn't be a bad idea to raise that. A lot depends on how the tourism is done. The company we went with, ROW International, goes with small groups of 6-12 and bends over backward to minimize the environmental impact.