Abyssal_Plain
Bank_Wave_Affected
Coastal_Terrane
Contourite_Feature
Cross_Shelf_Valley
Fracture_Zone
Iceshelf_Cavity
Island_Arc
Island_Coastal_Terrane
Lower_Slope
Margin_Ridges
Marginal_Plateau
Mid_Ocean_Ridge_Valley
No_Data
Plateau
Plateau_Slope
Ridge
Rough_Seafloor
Seamount
Shelf_Bank
Shelf_Deep
Structural_Slope
Trench
Trough
Trough_Mouth_Fan
Upper_Slope
Volcano