IF you’ve been into a souvenir shop in Hokkaido you will no doubt have come across a wall full of Marimokkori souvenirs. Marimo are rare algae balls found in only several lakes in the world, one of which is Lake Akan in eastern Hokkaido. Mokkori is a slang term for an erection. Put the two together and you get Marimokkori, a little green guy with a bulge in his pants, and one of Hokkaido’s most popular souvenirs!