Elbert, nice commenttary.
A ?, was the entire length of shoreline along the inner lagoon (reef side) historically, and naturally, populated with mangroves right to the shores edge (and beyond)? or did certain areas remain open(for whatever reason)?
Noted and concurr on the seaweed raking, studies have indicated that this can be a significant definite cause of beach loss over time. Also lets not forget the importance of turtle grass as a sand trap for beach enrichment and maintenance. Its is noted as one of the most effective means of trapping fine sandst in those areas farther away from the cuts and therefore having less entrained heavier sands.