While many actions have been attributed to Sandstone Deprivation Syndrome (SDS), the pictured action has not yet been confirmed as one of those. The mood of desperation and the way the person is clinging to the boulder would suggest a grave case of SDS, but it is wise to reserve judgement until a proper investigation can be conducted. In the meantime, it is safe to assume that this person is off his rocker in the reef.

Joe Tripod, who supported the camera for this photo of depravity,
was on the rock and definitely not off his rocker.