What is the coastline like? Sandy beaches? Rocks? Reef?
One of the most remarkable aspects of the northern coast of Brazil from Natal to Sāo Luís is that is almost entirely low-angle sandy beach and sand & mangrove river mouths with relatively few rocks and reefs. There are some rocks and one place in particular that I know of with a nasty bit of sharp reef (at the point in Barra Grande), but overall it’s a very friendly coast from a geographic point of view. What you will see on any given day depends a lot on the tide, since there is a 2-4m tidal range.