A good way to discover Capri, is to do a boat tour, and admire its rocky coast and many natural sites such as sea caves and coves. Usually lasting 1 hour or 2 hours (around € 20 per person), it is a good option for those who stay few time in Capri.
From the Marina Grande there are several companies that offer these excursions. It is also possible to rent a boat (with or without a sailor), but it is better to book in advance.
If the visit of the Blue grotto (grotta azzurra) is planned, it is necessary to change of boat on the spot and to pay the access (4 € + 10 € for the boat), read the Blue Grotto.

In general, the tours go through the following sites: Marina Grande – The Blue grotto – The Punta Carena lighthouse – Scugnizzo statue – Coral cave – The green cave – Marina Piccola bay – The Faraglioni – Villa Malaparte – The natural arch (arco naturale) – white cave

If you have a private boat, you can easily reach the Amalfi Coast and stop for example in Amalfi or Positano. In the middle of summer, there are many boats around the island of Capri. It is best to schedule your excursion early in the morning or in late afternoon.