Welcome to the Q&A Forum

It seems there is an issue with OSE so I can't see any link data for the site. The site you mentioned is clearly a spam site with links to "office cleaning London" and other links on it's home page which are completely irrelevant for a Carribean diving site. I am not sure what you mean "they don't link out to anyone". I see many links on their site. I checked a couple and the links work fine.