OCEAN · OCEANS & SEAS · ATLANTIC OCEAN
South Atlantic Ocean
The South Atlantic Ocean covers 40,501,812 km² — the #4 largest of the 101 named ocean and sea areas. Here's its size, its neighbours and the live water conditions at its heart right now.
Boundaries & area: Marine Regions (VLIZ), IHO Sea Areas v3 — from the IHO “Limits of Oceans & Seas” (S-23). MRGID 1914.
Live from Open-Meteo Marine at -33.7°, -18.8° (the sea's representative centre). A near-real-time model estimate.
How deep is the South Atlantic Ocean?
The IHO sea-area dataset that draws this map records each sea's name, boundary and surface area — not its depth, which varies enormously from the shallow shelf at its edges to its deepest trench. Rather than quote a single misleading number, we measure the water column directly: the live ocean currents trace its motion, and the deep-ocean layers (Argo floats and the descend-here column, coming to the Ocean canvas) read real temperature and depth as you go down.
SEE IT ON THE MAP
See the South Atlantic Ocean coloured on the live oceans-&-seas map.