Green shells can be found all over Palu Island. Palui prize them as decorations for their dens, and as such they are a de facto currency in most parts of Palui society throughout the island. They come from a kind of common sea snail. Blue Shell Worth 5 SP When hunting for green shells, you may occasionally come across a slightly rarer blue shell. They come from the most common kind of mussel in the waters around the island, and are usually considered more valuable than greens.
Yellow Shell Worth 10 SP
Yellow shells are only found on some parts of the island's coastline, and are generally a lot closer to the water. If you want to find them, you're going to have to work a bit harder than for green shells!