Es Grau is on the coast with a village of the same name, right by the Parc Natural de s’Albufera des Grau (70 acres of wetlands from the Bay des Grau to the Cape of Cap de Favàritx with a lake that is 2 kilometers long and 1,5 meters deep and one of the most important marsh areas of Menorca, which contributed to Unesco declaring the island to be a Biophere Reserve in 1993). It lies between Sa Cudia and Fra Bernat, in front of the large island called Illa d’en Colom. And is 9,5 km from Mahón.
The bay is large and horseshoe-shaped and includes Platja y Cala des Grau. It is sandy with shallow water and faces north-east, with light winds and calm water thanks to the protection of s’Illa d’en Colom (44 meters above sea-level), and the low-lying woods behind. Only boats with a draft of less than 3,5 meters can moor here. On the south side there is a rock bed of a mere 1.5 meters 60 meters from the shoreline. A spit runs across from S’Illa d’en Colom, meaning that only very small craft can get through the gap to access the island. All larger boats must go round the back of the island to avoid sa Llosa des Cap de Mestral.