I'd be interested, but I don't dive often enough that I think I would be able to contribute much. I've been to Cozumel only 4 times, and only had my camera with me on a handful of dives for a number of reasons:
1. Only had a crappy camera in 2012 (and only snorkeled)
2. Only had a slightly less crappy camera in 2013 (could only take it to Columbia Shallows and Paradise)
3. Only had one battery in 2015 and the charger fell out of my bag and got left behind
4. Life happened and I haven't been back since, so I don't have a lot of pictures (though I plan to go overboard in June!)
Some Flickr groups can be really picky about when pictures were taken and whether or not they can be contributed. If the rules are pretty relaxed and my pictures can be pretty much all from 2014, I might be able to play.