I was drinking coffee on the porch and saw 9 Mexican ladies walking along the beach collecting some seaweed and putting it in large burlap bags. They were being picky about which seaweed they picked, which made me very curious. I went down on the beach to ask them and find out.
The biggest answer I got to why they were picking it up was that several were going to eat it, like a salad, some were going to cook it, like a soup, and some were going to give to their fishermen husbands to put in the packing with the octopus they are catching to send to Japan. Sargasso is a delicacy in Japan, along with the octopus. I read that Mexico is supplying all the octopus for Japan now because the fishing in Africa was off. There are record prices for a kilo of Octopus now- $108 pesos a kilo. (around $10 a kilo US)
I guess there will be happy people in Mexico, AND Japan now. Bon Appetit Japan!