We love to take photos while traveling, but sand & sea aren't the most friendly elements for equipment. If you want to swim or snorkle, are there places where you can safely store your equipment? We are considering a dolphin swim too - a great opportunity for photos - but where do you leave the camera once you go into the water?
Leave the good camera on the ship and take a disposable underwater one for the beach. Of course you can also do I like I did-buy an underwater camera, or buy a housing for your current camera. That way you can take it in the water with you and not worry about leaving it behind. However, some dolphin swims will not let you bring in a camera (the sounds from it distract the dolphins, and the flash can hurt their eyes -and you will need flash underwater). Some beaches may have lockers, but then I worry about people watching what you put in them and break in when youre gone. And you definitely dont want sand or a drop of salt water landing on your camera!
Good advice above. Sand and water are murder and potential ruin for any camera. Waterproof disposables are the way to go or if you do it as often as I do, a nice waterproof camera can be purchased for $150. I use a Canon Elf waterproof 35mm. Has all the bells and whisles of a good camera (except zoom lens). I carry it all the time and it is a life saver in foul rainy weather as a back up to our better cameras as well. It is always with me at the beach and in the water. Simply rinse it in the sink, dry it off and ready to go again.