A very dear friend of mine did her senior paper on the Mayan use of seaweed in their diet. Do you have any info on whether the percentages of categories of foods (vegetables, seaweeds, grains, domestic food animals, captured food animals, molluscs, insects, etc) were any different from those of other ancient peoples? I know you mentioned the importation of parrotfish in an earlier post. This family of fish are the ones who create all the sand in areas with coral reefs, by eating the coral, crushing it with their teeth, swallowing it and pooping it where it washes ashore. Because it is made of the course, porous coral, it feels so remarkably different from the sand in areas like most of the USA, where the sand is made from granite and washes down the rivers to the seashore.