Comboios Biological Reserve protects a strip of coastal habitat near Regência, east of Linhares. The reserve itself is managed for conservation, so independent wandering is not the point; the value for travelers is understanding the turtle coast and the restinga landscape around the mouth of the Doce River.
Pair it with Regência and Projeto TAMAR rather than treating it as a normal beach day. The coast here is rough, open, and biologically important, with turtle nesting giving the place more weight than the usual line of sand and surf.