Coastline 2D: gradual 5 degree slope

Illustration of a 2D coastline indicating sea-level rise and continental slope

Illustration of a 2D coastline with saltwedge

Illustration of coastline base with steep 45 degree slope

Illustration of a 2D coastline with sea-level rise and increased swell

Illustration of a 2D coastline indicating sea-level rise with continental shelf

Illustration of 2-dimensional coastline base of a closed estuary with nearshore reefs

Illustration of a coastal floodplain

Illustration of river valley base with gentle slope