In various areas they have made boats, all but primitive, the most primitive is in the Baliem Valley. There they create a primitive raft. On such a thing I transferred there as well. In the Lake District they have hollow tree trunks, roughly finished. In Sentani - at the Sentani lake - there have been made refined canoes. In the Asmat area they are more developed, and they decorated their vessels. On the north coast - fore sea fisheries, they use boats with outriggers.