The top 3 on the  list are the US-owned Jarvis island in the Pacific, a grab bag of other US posessions labelled as USA Pacific Uninhabited Territories and Clipperton Island owned by France.

But I believe the Seychelles and Germany should actually be number 1 because they are independent countries whilst the top 3 are uninhabited islets owned by other states.

An international team of scientists conducted this first comprehensive assessment of the ocean and its ecosystems. It assesses ocean health in terms of the benefits from the ocean, organized as 10 goals that are enjoyed by people in a sustainable way.

The results published in the August 15, 2012 issue of the prestigious journal Nature, reveals a global score of 60 out of 100  http://tinyurl.com/96xgdef  The index calculated the index for every coastal country. Developed countries generally outperformed developing countries, but with notable exceptions like the Seychelles. Only 5% of countries scored higher than 70, whereas 32% scored lower than 50.

For more information visit, http://theenvironmentinseychelles.blogspot.com/2012/08/seychelles-tops-ocean-health-index.html