Normal
ABSOLUTELY bu your own snorkels. The "disinfection" consists of plunging the snorkels in a barrel containing some unknown material. No wonder viruses are rampant on cruise ships. We bought our snorkels and masks at a local dive shop- only about $35 and they can fit you correctly so water doesn't seep in the mask. Ditto the advice about the purge valve-much easier to keep water out of your mouth. And finally, don't forget to rinse your equipment with FRESH water when you get back to the ship. We made the mistake of not doing so and the salt deposits had to be removed professionally by the dive shop. HAVE FUN!!