Ocean Depth Map
This map shows the different depths of the bottom of the ocean. Each depth has a different shade of blue. For more detail, zoom in. For more information scroll down.
Depth in Feet
Ocean Light Zones
This map shows the depth of the seafloor. Even though the depth in feet looks arbitrary it corresponds to depth in meters.
The list below shows the depth in meters and feet.
The colors are not continuous. They are just different shades of blue to highlight the different features of the sea bottom.
The gaps or distances between depths are also not arbitrary. They correspond to how far the sun light travels in the ocean.
|>0 feet: 0m; Sunlight (Euphotic) Zone, Epipelagic Zone|
|656 feet: 200m; Sunlight (Euphotic) Zone, Epipelagic Zone|
|3280 feet: 1000m; Twilight (Dysphotic) Zone, Mesopelagic Zone|
|6561 feet: 2000m; Midnight (Aphotic) Zone, Bathypelagic Zone|
|9842 feet: 3000m; Midnight Zone, Bathypelagic Zone|
|13123 feet: 4000m; Midnight Zone, Bathypelagic Zone|
|16404 feet: 5000m; The Abyss, Abyssopelagic Zone|
|19685 feet: 6000m; The Abyss, Abyssopelagic Zone|
|22965 feet: 7000m; Hadal Zone, the Trenches|
|26246 feet: 8000m; Hadal Zone, the Trenches|
Sun Light Zone
This area is above 200m and is above the continental shelf.
This is the depth that contains most of the fisheries. Because it is Euphotic, primary production of algae can maintain and feed the creatures of the ocean.
The primary producers like algae, are photosynthetic and use the energy of the sun to maintain other organisms.
The Twilight Zone
The Twilight Zone is below 200m and above 1000m.
Sunlight decreases rapidly with depth. Photosynthesis is not possible in this zone.
Close to the continents the sea shelf slope increases dramatically. This is why it is not prominent in the map. It is quite difficult to find this depth on it as it is very narrow.
This zone is a major player at removing carbon dioxide from the atmosphere by storing it for centuries.
The organisms in this zone are not well known. This area is also subject to one of the largest migrations. Fish and zooplankton come here to retreat at dawn after feeding at night in the photic zone. Nature
Below 100m and above 4000m, this zone has no sunlight.
The water above creates incredible pressures.
Only Bacteria and soft bodied organisms can thrive in this conditions.
The main food source is the organic material what drops from the Twilight zone.
Other organisms live from the bacteria that thrive in the methane and sulfides seeping from the ocean floor.
The light zones have been covered, but there are some features at the bottom of the ocean floor that break the depth into different areas. The major ones are described below.
Continental Sea Shelf
The Continental sea Shelf, is the part of the continent that is submerged under water. This area is relatively shallow.
The sea shelf was exposed by drops in sea level due to glacial periods. Marinebio.
The average depth of the Continental sea Shelf is 150m.
The width varies across continents but it can average 80km.
If you look at this map the light blue colors next to the continents show the sea shelf.
South America next to the Pacific has a narrow shelf, while the Bering Sea has a wide Continental Shelf.
Mid Ocean Ridges
The Ocean Ridges are another visible part of this map. They are visible in the areas where the continental plates are separating. Specially visible in the Atlantic Ocean, between South America and Africa.
Mid Ocean Ridges are underwater mountain ranges formed by plate tectonics ScienceDaily
These ridges are uplifted because of the convection currents that rise in the mantle beneath the ocean crust. Therefore forming underwater mountain ranges, throughout the globe.
Bathymetry is the measurement of the depth of the water in oceans, rivers, or lakes.
Bathymetric maps look a lot like topographic maps. They use lines to show the shape and elevation of land features.
On Bathymetric Maps the lines connect points of equal depth.
This is a bathymetric map. It shows the depth of the Ocean Floor around the world.
Resources Ocean Depth
The Bathymetry shapefiles to create this map where downloaded from Natural Earth.
Seafloor Map Inspiration
I made this map as a first attempt at visualizing seafloor for a fisheries chart. The map was never finished but I really liked how the bathymetry of different depths looked. So here is just the bottom of the ocean for you!