Like most of the coves on this part of the coast of Mallorca, Cala sa Nau is a sinuous inlet of sea about 400 m long. This means that the waters are very protected from the winds and that they hardly present waves. The beach is the mouth of a small freshwater spring. Unlike other beaches in the area, it descends very quickly into the sea. Relatively a few meters from the beach line the water already covers, so it will be necessary to be careful with children.
The environment is practically virgin. Despite this, access to the beach is comfortable, even with a walkway for people with mobility problems.
It is also ideal for anchoring boats. The sand and algae bottom is between three and five meters deep at the buoy line. The anchorage area is somewhat exposed to east-northeast winds.