Barnegat Bay in the context of "Toms River (CDP), New Jersey"

Barrier islands are a coastal landform, a type of dune system and sand island, where an area of sand off the coast has been formed by wave and tidal action parallel to the mainland coast. They usually occur in chains, consisting of anything from a few islands to more than a dozen, and are subject to change during storms and other action. They protect coastlines by absorbing energy, and create areas of protected waters where wetlands may flourish. A barrier chain may extend for hundreds of kilometers, with islands periodically separated by tidal inlets. The longest barrier island in the world is Padre Island of Texas, United States, at 113 miles (182 km) long. Sometimes an important inlet may close permanently, transforming an island into a barrier peninsula, often including a barrier beach. Though many are long and narrow, the length and width of barriers and overall morphology of barrier coasts are related to parameters including tidal range, wave energy, sediment supply, sea-level trends, and basement controls. The amount of vegetation on the barrier has a large impact on the height and evolution of the island.

There are chains of barrier islands along approximately 13 to 15% of the world's coastlines. They display different settings, suggesting that they can form and be maintained in a variety of environments. Numerous theories have been proposed to explain their formation.

The Toms River is a 41.7-mile-long (67.1 km) freshwater river and estuary in Ocean County, New Jersey, United States. The river rises in the Pine Barrens of northern Ocean County, then flows southeast and east, where it is fed by several tributaries, and flows in a meandering course through wetlands. The river empties into Barnegat Bay—an inlet of the Atlantic Ocean—and the Intracoastal Waterway at Mile 14.6.

40°03′08″N 74°05′13″W / 40.05222°N 74.08694°W / 40.05222; -74.08694

The Metedeconk River /məˈtiːdəkʌŋk/ is a tributary of Barnegat Bay in Ocean County, New Jersey in the United States.

Barnegat Inlet is a small inlet connecting the Barnegat Bay with the Atlantic Ocean in Ocean County, New Jersey. It separates Island Beach State Park and the Barnegat Peninsula from Long Beach Island. The Barnegat Lighthouse sits at the northern end of Long Beach Island along the inlet.

The area surrounding the Barnegat Bay and Barnegat Inlet were described by Henry Hudson, in 1609, as "...a great lake of water, as we could judge it to be ... The mouth of the lake hath many shoals, and the sea breaketh on them as it is cast out of the mouth of it." The inlet was originally named in 1614 "Barendegat," or "Inlet of the Breakers," by Dutch explorers of the coastline, referring to the waterway's turbulent channel.

The Point Pleasant Canal is a canal in Point Pleasant, New Jersey, forming a segment of the New Jersey Intracoastal Waterway. It connects the Manasquan River and Manasquan Inlet to Barnegat Bay, providing a navigable route for vessels along the Jersey Shore.