As mentioned above, DiveAssure is Primary Insurance - this is big as you don't want to be on the hook for treatment abroad, then wait for the insurance carrier to reimburse you.
I've been using Dive Assure for years, sign my students up for free student diver coverage and am very happy with the service.
I've been using Dive Assure for years, sign my students up for free student diver coverage and am very happy with the service.