When the tide goes out, the native northern Eskimos/Inuit people go under the ice and search for mussels. They only have 30 minutes before the tide comes back in.
Erntgedankfest in Northern Germany
There were also people throwing candy, and some even passing out sausages, pretzels, and giving out shots of various liquors. Afterward, everyone made their way to a field where they pulled up the festival crown.