The land in Delaware Seashore State Park saw frequent natural changes in the location of the inlet between the inland bays and the Atlantic Ocean.

[1] In 1966, the strip of land between the Little Assawoman Bay to the west and the Atlantic Ocean to the east between South Bethany and Fenwick Island became a separate southern portion of the park.

The park offers surf fishing along the ocean and angling at Indian River Inlet.

[4] Delaware Seashore State Park offers a beach for surfing to the north of the Indian River Inlet.

[1] Delaware Seashore State Park offers camping for both tents and recreational vehicles.

The park's campsites offer electric and sewer year-round, with water and showers available during the full service period.