We swam through a 20-25 ft tunnel at ~65 feet that we had to basically crawl through, crawling towards the light at the literal end of the tunnel.
Rented a bike. Can do a lap around the island (Caye Caulker) in maybe ten minutes, lazily. Walking barefoot most the time, though.
Reading in the hammocks.
Growing a beard.
Found the beer distributor and have been ordering cases of beer through them at ~3x less than you can find in restaurants (who charge ~$2US per botttle)
Uploading a couple pics, but microwave link to the mainland isn't the fastest:
http://www.picpix.com/brad/gallery/000p8gbk
(The underwater ones will be better, later.)
How are all you suckas working? Wait, actually I don't care. :P