I went snorkeling with stingrays and was able to pet them in Grand Cayman. You do have to be careful, to pet them from the underside and not come down or touch them from above, but our tour guide said he only had one person get stung in 10 years. So I'm a little freaked out by this, partly because stingrays are so innocuous compared to some of the other animals he cavorted with, and partly because I survived them and he didn't.
RIP Steve Irwin. Crikey, indeed.