The Kuban River delta has different types of landforms like bars, channels, and lagoons due to changes in sea levels and river flow. There are three main types of delta in the area, each with its own characteristics. The delta's landscape was shaped by the river's water and sediment flow over time. The delta's relief formed in three stages during the Holocene period, creating a mix of old and new landforms. The modern estuaries and floodplains were formed in the final stage, separated from the sea by a coastal bar.