For some reason, this reminded me of you and your raft/boat experiment... Could the term "green iguanas" be symbolic of US currency? Cheers, --David http://dailynews.yahoo.com/headlines/od/story.html?s=v/nm/19981008/od/iguanas_1.html Yahoo! News Human Interest Headlines Thursday October 8 11:02 AM EDT Here come the rafting iguanas LONDON (Reuters) - Scientists said Wednesday they have solved the mystery of how animal species were dispersed throughout the Caribbean. Researchers had suspected that animals living on the tropical islands had probably hitched rides on floating debris to travel to other islands. But skeptics said the theory was improbable, unobservable and could never be proven. Until now. In a letter to the scientific journal Nature, researchers from the United States and the Caribbean island of Anguilla said they have evidence that green iguanas, originally from the island of Guadeloupe, used a natural raft to invade and colonize Anguilla, about 175 miles (281.6 km) away. ``This species did not previously occur on the island. They arrived on a mat of logs and uprooted trees,'' Ellen Censky, of the Carnegie Museum of Natural History in Pittsburgh, Pennsylvania, said. Local fisherman witnessed the arrival of the 15 refugee iguanas on the eastern shore of Anguilla in 1995. Censky and her colleagues suspect a particularly bad hurricane season in the Caribbean that year sparked the exodus. ``Approximately a month after the first of these hurricanes, iguanas reached the shores of Anguilla,'' said Censky. The scientists marked many of the males and females that arrived on the raft. Several months later they noticed that one of the iguanas was pregnant. ``Our observations confirm that raft dispersal can occur successfully, and document the over-water dispersal of a group of large vertebrates and their persistence and possible reproduction after landfall,'' Censky added.