Túneis da Piedade
Eddies or swell
Use a torch
No direct access to surface
Water craft traffic
Natural passages carved in the rock by the force of the sea. Routes with an intact roof, with passages on one side and rock on the other.
The bottom consists of large blocks of rock, pebbles, and sand in some parts. It is essential to maintain good buoyancy, in order to avoid stirring up the sand on the sea bed and thereby losing visibility, which could cause the diver to lose the exit.
Given that there are tunnels with entry and exit points in the rock, there is a possibility of some currents that could make exiting difficult. If this happens, change direction and go back the way you came in. The use of a torch is essential.
There is lots of sea life on the walls of the passage, which is a protected space for smaller species, and the young of larger fish.