Below is a map showing the topography and bathymetry of southern South America.

There are several world maps that show bathymetry out on the internets available for download.

This first one is a map showing the bathymetry and location of the seismic surveys.

The maps cover both bathymetry -or the shape of the ocean floor -along with the continent's tectonic origins.

Okay, so this week's Seafloor Sunday isn't really the sea, but it is some great bathymetry data so I'm going to show it anyway.

The image below is from this website describing a research cruise in 2008-2009 that acquired multibeam bathymetry data and cores.

Below are excerpts from an article discussing the upcoming addition to GoogleEarth -adding higher resolution bathymetry data (you can read the whole article here).