Tasman Sea at a glance
- 3,360 maverage depth
- 4,314 mmedian depth
- 6,281 mmaximum depth
- 3.3 million km²water area
Tasman Sea is a sea. Inside its outline the GEBCO grid has about 3.3 million km² of water, with an average depth of about 3,360 m (the middle value is 4,314 m) and a maximum of 6,281 m, found at 48.51° S, 164.30° E.
Open the map at the deepest cell and tap to read the depth.
How deep is each part of the Tasman Sea?
The bar splits the Tasman Sea's water by depth. Each colour is a depth band, and the shares add up to 100%.
- 0 to 200 m: 4.9%
- 200 to 1,000 m: 7.8%
- 1,000 to 4,000 m: 33.1%
- 4,000 to 6,000 m: 54.2%
- below 6,000 m: 0%
Named features near the deepest point: Puysegur Trench (55 km), Puysegur Plateau (249 km), Christable Seamount (280 km), Mason Canyon (287 km).
The Tasman Sea if sea level dropped
The slider on the map lowers the sea in steps. This table shows how much of the Tasman Sea's water would be land at each step.
| Sea level lowered by | Becomes land | Share of its water |
|---|---|---|
| 10 m | 3,344 km² | 0.1% |
| 20 m | 8,604 km² | 0.3% |
| 50 m | 34,839 km² | 1% |
| 80 m | 61,340 km² | 1.8% |
| 120 m | 103,696 km² | 3.1% |
| 200 m | 162,159 km² | 4.9% |
| 500 m | 208,320 km² | 6.2% |
| 1,000 m | 423,101 km² | 12.7% |
| 2,000 m | 904,813 km² | 27.1% |
| 3,000 m | 1.2 million km² | 37.1% |
| 4,000 m | 1.5 million km² | 45.8% |
| 6,000 m | 3.3 million km² | 100% |
A simple bathtub model: it lowers the sea everywhere by the same amount and does not simulate how water would really drain.
Nearby seas
- Coral Sea average depth about 2,553 m
- Great Australian Bight average depth about 3,184 m
- Gulf of Carpentaria average depth about 41 m
- Solomon Sea average depth about 2,825 m
- Bismarck Sea average depth about 1,629 m
- Ross Sea average depth about 2,026 m
Nearest by the centre of each outline. All oceans and seas
Frequently asked questions
How deep is the Tasman Sea?
On average about 3,360 m in the GEBCO grid (the middle value is 4,314 m). The deepest cell inside its outline is 6,281 m, at 48.51° S, 164.30° E.
How big is the Tasman Sea?
About 3.3 million km² of water inside its Natural Earth outline, counted from the grid cells that are below sea level.
How much of the Tasman Sea would be land if sea level dropped?
With the sea 50 m lower, about 34,839 km² (1%) 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.