The biggest city party (Festa da Tainha) happens by the winter, when the cold water brings huge schools of Tainha fish (a fish with meat rich in fat, suitable to grilling, vaguely similar to salmon but showing a white meat).
Based on the recognition of animals in the Constitution, a Brazilian Supreme Court ruling resulted in the ban of animal-related activities that involve claimed "animal suffering such as cock fighting, and a tradition practiced in southern Brazil, known as “Farra do Boi” (the Oxen Festival)".
The first three non-Indian inhabitants in the 18th century were from a small military patrol that helped travellers to cross the "river" (the sea estuary) and protected them from Indian attacks (save for the Carijós, all other tribes in the area tended to react violently to white man presence).
The main two roads were built well into the 20th century: The Baia da Babitonga sea estuary is delimited by the mainland at West and the São Francisco island at East.
São Francisco port is in the estuary where the water is calm, and it could be reached both from South and North island extremes.
First, the South sea exit no longer could be used for navigation, since the landfill blocked the route to São Francisco port.
In 1982, an emergencial action was taken in order to reopen the estuary for good: the exit was lined with big stones, as well as made straight, deeper and narrower.