Northcoast and all the nice small deep water bays with crystal clear light blue water is a must when renting a boat. Rent a boat with sun screen a fridge - you will need it - and make sure to bring snorkling gear and flippers for your trip along the coastline
We spent most the time in Aucanada next to the lighthouse island. The north part of Mallorca is the best area to enjoy the sea and the amazing cliffs and mountains next to the water. Alcudia Bay and Pollensa bay offer a lot of coves where to stop for a swim.