Jesters of Santiuste. The Jesters of Santiuste are the best show that the Cantabrian Sea can offer us on days when the wind blows strongly and the sea is rough. The water jets can reach 30 meters high, or even more. What is a Jester? – A jester is an inlet of water from a strong wave. This advances through a crack and in the cliffs that has a vertical exit to the outside, projecting