At a flat coast or flat shoreline, the land descends gradually into the sea. Flat coasts can be formed either as a result of the sea advancing into gently-sloping terrain or through the abrasion of loose rock. They may be basically divided into two parallel strips: the shoreface and the beach.

Flat coasts consist of loose material such as sand and gravel. Wind transports finer grains of sand inland over the dunes. The sea washes pebbles and sand away from the coast and dumps it at other locations.

The typical sequence of landforms created by the sea is described as a "littoral series".

The littoral series of a flat coast starts in the permanently flooded shallow water region, or shoreface, with a sand or gravel reef (also called a bar). The longshore bar is an elongated ridge of sand found parallel to the shore in the surf zone on many flat coasts. It consists mainly of sand or gravel, depending on the material available along the coast. The sides of the sandbar fall gently away. The basin between a sandbar and the shore zone is called the runnel or swale. The presence of a bar clearly indicates that the movement of waves is transporting and depositing material on the seabed. There may be several bars whose longitudinal axes all run parallel to the beach and which are separated by equally parallel runnels or creeks. The drainage troughs in areas of tidal flats also run parallel to the coast.

Flat, or flatness, describes an object or condition that is very smooth or level.

Flat or flats may also refer to:

A coastline or seashore is the area where land meets the sea or ocean. A precise line that can be called a coastline cannot be determined due to the dynamic nature of tides. The term "coastal zone" can be used instead, which is a spatial zone where interaction of the sea and land processes occurs. Both the terms coast and coastal are often used to describe a geographic location or region; for example, New Zealand's West Coast, or the East and West Coasts of the United States.

A pelagic coast refers to a coast which fronts the open ocean, as opposed to a more sheltered coast in a gulf or bay. A shore, on the other hand, can refer to parts of the land which adjoin any large body of water, including oceans (sea shore) and lakes (lake shore). Similarly, the somewhat related term "bank" refers to the land alongside or sloping down to a river (riverbank) or to a body of water smaller than a lake. "Bank" is also used in some parts of the world to refer to an artificial ridge of earth intended to retain the water of a river or pond. In other places this may be called a levee.

Gene Romero (born May 22, 1947 in Martinez, California) is a former motorcycle racer who won the 1970 A.M.A. Grand National Championship and the 1975 Daytona 200. He competed in the 200 fourteen times, finishing second in 1970 and 1971.

Romero's career spanned sixteen years starting in the late 1960s until his retirement in 1981. He won 12 AMA Nationals throughout his career including the AMA Most Popular Rider of the Year Award in 1970. He was one of the first racers to attract sponsorship to the motorcycling sport from outside the motorcycling industry. For one season, Evel Knievel was Romero's primary sponsor

Romero was inducted into the Motorcycle Hall of Fame in 1998.