"Seaweed" [algaes and kelps], of course, has been called one of nature's almost perfect foods. Clean water, check. How was the weather and did she construct a shelter?
Edit: The article says she was found at a fire.
After I posted the first link I found
another link that had more details but no info on shelter nor weather.
She survived six days on one granola bar, a banana, water from a stream, and a fire she lit with a disposable lighter. Officials describe the area as extremely isolated, with nothing but steep cliffs, surf-pounded beaches and thick rainforest right to the waterline.
Then at 2:15 a.m. PT Sunday, a commercial fishing boat dropped anchor in Tian Bay, said Olsen.
"The fishing vessel reported what he thought was a flare," he said.
But it wasn't a flare.
"She had made a fire on the beach and was throwing embers and such so she would be spotted."
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.
John Lubbock