Ocean Floor Map

Yellow Sea depth map

Sea: average depth about 46 m, deepest 255 m (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.

Yellow Sea at a glance

  • 46 maverage depth
  • 45 mmedian depth
  • 255 mmaximum depth
  • 369,247 km²water area

Yellow Sea is a sea. Inside its outline the GEBCO grid has about 369,247 km² of water, with an average depth of about 46 m (the middle value is 45 m) and a maximum of 255 m, found at 33.05° N, 121.13° E.

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

How deep is each part of the Yellow Sea?

The bar splits the Yellow Sea's water by depth. Each colour is a depth band, and the shares add up to 100%.

  • 0 to 200 m: 100%
  • 200 to 1,000 m: 0%
  • 1,000 to 4,000 m: 0%
  • 4,000 to 6,000 m: 0%
  • below 6,000 m: 0%

Named features near the deepest point: Hatoma Knoll (948 km), Iriomote Submarine Volcano (982 km), Unnamed volcano (1,009 km), Tsushima Basin (1,037 km).

The Yellow Sea if sea level dropped

The slider on the map lowers the sea in steps. This table shows how much of the Yellow Sea's water would be land at each step.

Sea level lowered byBecomes landShare of its water
10 m32,896 km²8.9%
20 m84,264 km²22.8%
50 m202,591 km²54.9%
80 m334,242 km²90.5%
120 m369,064 km²100%
200 m369,244 km²100%
500 m369,247 km²100%
1,000 m369,247 km²100%
2,000 m369,247 km²100%
3,000 m369,247 km²100%
4,000 m369,247 km²100%
6,000 m369,247 km²100%

A simple bathtub model: it lowers the sea everywhere by the same amount and does not simulate how water would really drain.

Nearby seas

Nearest by the centre of each outline. All oceans and seas

Frequently asked questions

How deep is the Yellow Sea?

On average about 46 m in the GEBCO grid (the middle value is 45 m). The deepest cell inside its outline is 255 m, at 33.05° N, 121.13° E.

How big is the Yellow Sea?

About 369,247 km² of water inside its Natural Earth outline, counted from the grid cells that are below sea level.

How much of the Yellow Sea would be land if sea level dropped?

With the sea 10 m lower, about 32,896 km² (8.9%) of its water would be land. At 6,000 m lower, 100% would be. This is a simple bathtub model that lowers the sea evenly everywhere.

Data: depths from the GEBCO_2026 grid, statistics worked out inside the Natural Earth outline of the sea. See data sources and licences. The GEBCO Grid should NOT be used for navigation or for any other purpose involving safety at sea.

All oceans and seas · Undersea features · Drain the oceans

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