We are taking our trip to Playa del Carmen in November and I plan on bringing my D SLR with me. There are some day trips we plan to do that I want to take my camera with me but these day trips also involve water at some point. Example: We plan to go to Tulum and I want to bring my nice camera to take pictures of the ruins , after we plan to possibly snorkel on the beach there. We will not be with a tour group and would be using public transport so our things would need to stay with us . I'm afraid to leave my nice camera in a book bag sitting on beach as we snorkel that it may get stolen. The best thing I can think of is to have it on me in the water(submerged enough to snorkel). I found these: www.thewaterproofstore.com/aloksakmulti.html and am thinking maybe putting camera and other id's cash phones in these bags then putting those into another semi water resistant book bag (probably would not keep water out which is why I would need the pouches in the link above)
What do you think? would this keep my camera and phones safe?