Abstract: A water wave breaker includes an attachment portion and a curved concave portion. The curved concave portion is connected with the attachment portion. When the attachment portion is attached to a substantially vertically extending surface a first end of the curved concave portion, which is disposed laterally farther away from the attachment portion than a second end of the curved concave portion, is disposed above the second end of the curved concave portion with the curved concave portion oriented in a downward direction away from the substantially vertically extending surface.