You need to check out @cryptopie blog @marsella-2017
I'm pretty much 100% he couldn't scuba dive because of his extremely complicated medical condition... but snorkeling on a reef is more likely as a possibility to experience the underwater world.
If I ever make it to the Philippines I would definitely want to visit him to say hello, and help make snorkeling a reality if possible ๐
RE: Travel Tales: Mexico #1 - Cosumel, Diving and the Mexican Heat