These days, many beachcombers are looking for sea glass. Defined as glass that has been tumbled by natural wave action to the point where there are no sharply-defined edges and all surfaces exhibit a frosted or etched appearance, sea glass is created when debris from glass objects end up in the ocean, breaks into pieces, and is smoothed by the action of waves and sand. The best times to look for sea glass are during spring tides and during the first low tide after a storm. The color of sea glass is determined by its original source. Most sea glass comes from bottles, but it can also come from jars, plates, windows, windshields, ceramics or sea pottery. The most common colors of sea glass are kelly green, brown, white(clear), and purple(clear).