Kauai, Hawaii coastline taken during a helicopter tourI have been lucky in my life to have had the opportunity to dive in some of the prettiest and most diverse underwater habitats on earth. Without exception, the nicest dive sites are far from civilization, which stands to reason. But today I want to talk about the places that are in trouble biologically speaking. The outer Hawaiian IslandsLast year, I went to some of the outer Hawaiian Islands for a nice vacation and, of course, to dive. My wife and I went to Hawaii on our wedding anniversary 44 years ago, and I dove then too, so I had an opportunity to assess the place decades later. The diving then was good, plenty of varied life with a smattering of sharks.