Lower and upper deck
deck
deck
The bottom of a cave is a floor. Sounds obvious but it is the technical term.
Forest floor
The bottom of a valley is called the valley floor. It is typically the lowest point in the valley and where most of the water and sediment accumulates.
A spiny-skinned invertebrate that lives on the ocean bottom floor is called a sea urchin.
The bridge
It's called the hull (pronounced hul). It's the lowermost part of a ship - the part of the ship that is submerged under water. The "line" along the center of the bottom of the hull of the ship is the keel of the ship. It's laid down first when the ship is built, and is a structural component. It could be looked at as the "backbone" of the ship.
It's called the hull (pronounced hul). It's the lowermost part of a ship - the part of the ship that is submerged under water. The "line" along the center of the bottom of the hull of the ship is the keel of the ship. It's laid down first when the ship is built, and is a structural component. It could be looked at as the "backbone" of the ship.
The bottom layer of a rainforest is called the forest floor. It is often dark and covered with fallen leaves, branches, and plants that have decayed over time, creating a nutrient-rich environment for new growth.
It is called the hearth, and the well designed ones are flush with the floor.
The bottom of an ocean is typically called the seafloor. Although the seafloor can have variant geographical features such as mountains or volcanos, a normal, and flat terrain is called the seafloor.