I'm a diver, DAN is the only company I can name that specialises in diving insurance.

Huh, apparently they're registered in Malta, what a coincidence...

There's pretty much only one global insurer affiliated with dive schools, so this is spot on

well, it is. quick search revealed a name of a certain big player, although there are some other local companies whose policies can be extended to "extreme sports"

https://www.reddit.com/r/scuba/comments/1r9fn7u/apparently_a...