海盆在海洋学上可以指被海水覆盖的任何地方，但在地质学上，海盆则是指位于海底的盆地，他的水深比起周围地区深。以下所称的海盆，皆指地质学上的海盆。

北极海盆

阿拉伯海盆

阿根廷海盆

阿留申海盆

In hydrology, an oceanic basin may be anywhere on Earth that is covered by seawater, but geologically ocean basins are large geologic basins that are below sea level. Geologically, there are other undersea geomorphological features such as the continental shelves, the deep ocean trenches, and the undersea mountain ranges (for example, the mid-Atlantic ridge and the Emperor Seamounts) which are not considered to be part of the ocean basins; while hydrologically, oceanic basins include the flanking continental shelves and shallow, epeiric seas.