Dhows were the traditional boats in this part of the world used to transport goods from zanzibar to countries in the mainland. Traditional dhows used to be made in Stone Town and in Nugwi. These types of boats are still used today, mainly for touristic purposes and for fishing.
If you book a sunset cruise or if you go snorkeling or diving, chances are that wou will be transported in a dhow. Watch them return to the harbour at around 6 PM, it's truly an unforgettable sight.
Dala dalas are small local buses serving the island main arteries. Dala dala 116 is the one that links Nungwi to Stone Town.
Dala dalas have two benches each facing the other and accommodate as many people as the driver decides it's logical to squeeze in. They usually depart when they are full.
It's not the most comfortable mean of transportation (due to the large potholes along the road) but it's incredibly cheap - and distances on zanzibar island are after all not that great, so the trip is definitely bearable.
In Nungwi they leave from a square next to one of the football fields, in the traditional village.