The reuseable camera is in a plastic casing and yes, it's a VERY tight seal. It's along the same line as a waterproof case that you would carry your money or id in, only larger. It snaps together and there is rubber in between to make a tight seal. I hope this makes sense. I do have to say that we got some more pictures back from this weekend at the lake. They are not as good as our cruise pictures. What I can figure is that it was BRIGHT sunshine on the cruise and this weekend was a little overcast as the lake. The pictures are ok, just not as vibrant as the brighter ones. So maybe this camera would be best used in best outdoor conditions. It's still a great option for us and hopefully you guys can use it as well. Target is the only place I've seen these so far.
Lisa