There are three Glass Beach sites in Fort Bragg where trash was dumped into the ocean between 1906 and 1967. Site Two (1943–1949) and Three (1949–1967 – Glass Beach) are located at the end of the path that begins on the corner of Elm Street and Glass Beach Drive.
Take the time to stroll along the shoreline and search for colorful glass fragments. Remember, however, that collecting glass from the beach is prohibited to preserve its natural beauty and protect the ecosystem.
It is forbidden to take sea glass within the boundaries of MacKerricher State Park: the glass morsels are strictly for your viewing pleasure, not for taking home as a souvenir. After all, if each of the thousands of daily tourists were to take some home, then, eventually, it wouldn't be Glass Beach!
The best sea glass beaches in the US are Fort Bragg Glass Beach in Northern California, Davenport Beach north of Santa Cruz in California, and Grant Park Beach in Wisconsin. There are more good sea glass beaches to explore in US.
No restrictions on shells in carry-on, but do be sure to clean them well so all your things don't smell (look under the Top Questions at the top right side of this forum for info on how to clean shells).