Every now and then a combination of sea conditions bring on the cleansing of our Caribbean Sea of lots seaweed. This occurred once again last month when Hurricane Sandy passed over the island. Many pics of the seaweed have been posted on various trip reports here on our Negril Message Board. And as anyone who lives by the sea knows all too well, seaweed begins to create a rather vigorous aroma as it decays.
It's been the same way as long as I've been around Negril (1969). It's a natural occurrence.