I found a couple of maps of the Atlantic ocean. It is huge. The first map is a general small map. The second and third show the Atlantic Ridge. It gives and idea about the bottom of the ocean.  The last pictures are of the ocean.

There is a North and South Atlantic. They say that the bottom is made of old shells and skeletons of sea creatures. They say it is soft and it oozes. It is squishy. On the American side of the ridge, they say that there is red clay.