Hundreds of volunteers have gathered along the Jersey Shore and in coastal areas of New York City to clear debris and repair dunes damaged by Superstorm Sandy.

Christmas tree dune restoration at Island Beach State Park during the Waves Of Action clean up (Clearn Ocean Action via Facebook)

Saturday's cleanup effort was organized by Clean Ocean Action as part of the "Waves of Action for the Shore" program. It was part of a "National Day of Service" declared to honor the life and legacy of Dr. Martin Luther King Jr.

The group says more than 2,500 people representing 22 organizations took part in the simultaneous cleanups that took place at 30 locations.

Volunteers helped clean out hard-hit neighborhoods, parks, beaches and waterways. They also helped rebuild dunes damaged by the storm that hit the region in late October.