For visits to the aquarium and museum, it is not necessary to reserve. However, it is preferable to reserve your place for the sea excursion and fish harvesting activity, as the number of participants is limited.
It’s always a little colder on the sea. It is recommended that you wear warm clothing, including a windbreaker, which you can remove if the sun shows up. Sunscreem is always a must on the water. Wear closed shoes.