ground water
A sandbar is a temporary, underwater or exposed ridge of sand, gravel, or shell material that is built up by currents in a river or by waves on a beach. It typically forms near the coast and can disappear or change shape depending on tides and currents.
The French word for a ridge of sediment, gravel, silt, and other materials is "alluvion."
A long winding ridge made from deposits of sand and gravel is called an esker. Eskers are formed by the melting of glaciers and the deposition of sediment as the flowing water carries and deposits material in a sinuous ridge-like form.
"un sillon" is probably what you are looking for. It is the term used for Japanese gardens of sand or gravel, or in agriculture for tilled fields.
The mid Atlantic ridge is an underwater mountain chain.
An example of a sand bar is the narrow, underwater ridge of sand that forms parallel to a shoreline, such as the Outer Banks in North Carolina. These shallow underwater formations can become exposed at low tide and are important for protecting beaches from erosion.
Underwater eruptions cause tsunamis and cause lava to form and underwater ridge.
The mid-ocean ridge are mountains that were formed underwater.
mid-ocean ridge
Yes, an esker is a sinuous ridge formed by sediment deposited by meltwater flowing through a channel or tunnel within glacial ice. As the glacier retreats, the meltwater carries sand and gravel, which accumulate in the channel. Once the glacier has melted away, the remaining ridge of sediment is exposed, creating the distinctive landform known as an esker.
ocean ridge
Underwater mountian ranges/ underwater volcanoes