Dramatic rock formations and sea caves around the Dōgashima coast are best experienced from these cruises, which depart from the jetty just beyond the Tourist Information Center, in front of the bus stop.

A highlight is sailing into the Tensōdō (天窓洞), a cave lit by a natural skylight in the rock (you can also peer down from the top by hiking the cliff path). In choppy seas only the 20-minute cave cruise operates.