Between Pontal do Sul and Baia de Guaratuba, about 20 miles SSW, the coast is low and backed by Serra do Prata.
A conspicuous water tower stands on the coast, 10 miles SW of Pontal do Sul, and a similar tower stands on Ponta de Matinhos, 2.5 miles N of the entrance to Baia de Guaratuba.
At the entrance of Paranagua Bay, there are many banks and submerged and uncovered rocks in depths of less than 10m. This bay is formed by the estuaries of several rivers and is surrounded by mangrove forests. Navigation in this area should only be attempted through Galheta Channel.
Galheta Channel was dredged on Galheta Bank; the depths out of its banks are less than 5m.