Ocean Floor Map

The Well map: how deep is it?

Deep: 46 m down (GEBCO_2026 grid).

Tap or scroll to load the interactive map

Sea level todayDrag the slider to lower the sea and see the land that would appear.

Sea level in metres below today’s. A simple bathtub model: it lowers the sea everywhere by the same amount and does not simulate how the water would really drain.

Key

Sea depth

  • Deeper than 6,000 m
  • 4,000 to 6,000 m
  • 2,000 to 4,000 m
  • 1,000 to 2,000 m
  • 200 to 1,000 m
  • Shallower than 200 m (the continental shelf)

Land height

  • Land up to 500 m
  • 500 to 2,000 m
  • Above 2,000 m

Drain the oceans

  • Seabed exposed when the sea is lowered A dashed white line marks today’s coast.

How to read the map. Darker blue is deeper water. Tap anywhere to see how deep the sea is there, or how high the land is, and the nearest named undersea feature. Depths come from the GEBCO_2026 grid, which in most of the deep ocean is predicted from satellite measurements of the sea surface rather than surveyed by ship, and the map’s tiles are coarser than the grid, so narrow trenches read shallower on the map than their true depth. Not for navigation.

The Well at a glance

  • 46 mdeep in the grid
  • Deeptype of feature
  • 53.03° N, 0.43° Elisted point
  • United Kingdomnearest country, about 11 km
  • 24 of 24deepest of the deeps in our list

The Well is a deep. In the GEBCO grid it reaches 46 m below sea level. That figure is the deepest cell in the grid within 20 km of its listed point. The nearest country in our list is United Kingdom, about 11 km from its listed point.

Open the main map at the deepest cell and tap anywhere to read the depth.

How deep is the The Well?

The grid figure is 46 m. We measured it as the deepest cell in the grid within 20 km of its listed point. The cell is at 53.03° N, 0.43° E. The GEBCO_2026 grid has a value every 15 arc-seconds, about 460 m at the equator, so a very narrow feature can be a little deeper or shallower in reality than any grid cell shows.

Wikidata has no depth figure for this feature, so the grid is our only source for it.

Among the 24 deeps in our list it ranks 24th by depth. The list is the named features on Wikidata with a position at sea, so it is not every deep in the world.

About deeps

A deep is the deepest part of a trench or basin: a small area, often only a few kilometres across, that gets its own name.

This site lists 24 deeps, 13 of them with their own indexed page. See all undersea features.

Nearby undersea features

Distances are between listed points. A long feature such as a trench or ridge has a single listed point on Wikidata.

The deepest deeps in our list

Frequently asked questions

How deep is the The Well?

In the GEBCO grid the figure is 46 m. That is the deepest cell in the grid within 20 km of its listed point.

Where is the The Well?

Its listed point is 53.03° N, 0.43° E, about 11 km from United Kingdom. The grid's deepest cell for it is at 53.03° N, 0.43° E.

Data: depth from the GEBCO_2026 grid. Name and position from Wikidata Q24636639 (CC0). See data sources and licences. The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.

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