Thanks for the replies. Although I am not a staunch greenie, I do agree with Jon and will look for alternatives to the biodegradable balloons or most likely just try without a float. I know where we are going there is a significant population of resident turtle and dugong that are seen around the jetty every day. Would hate to be responsible for harm to one of these. And I'm sure if the locals trace it back to my balloon, I will become the "live bait". Thanks for all the suggestions.