inverted shaft of weak lightlookin to the north, from sea level,and out across the sea we saw a shaft of light from a great height to the surface of the sea. the shaft of light was rather similar to seen when the sun shines from behind a cloud but not so bright or intense.it was also peculiar in as much as the beam appeared to be reversed .i.e. the largest part of the beam was uppermost as in the case of an upside down pyramid. there was not a cloud in the sky.it was a bright sunny day and we were looking away from the sun . the shaft of light was steady and i have no idea how long it was evident before i saw it .there was no sound and no visible cause for the light. i had powerful binoculars with me yet could see nothing. after several minutes i went by car up hill to a height of some 200 mtrs to get a better view. the result was the same.the light appeared to cover perhaps a half mile of ocean surface and the source covered a distance of perhaps two miles? it is difficult to estimate the distance from the shore but it was considerable,perhaps 5 miles or more. there was not much available to asses the dimensions by.there was no disdurbance to the water surface.there was no sound.after a while it suddenly went,as if someone or something had flicked a switch.gone.what i made of it is pure guesswork. i assume that something was interested in what was in , on or below the ocean surface.somehow it was "looking" by some form of energy that caused the brightness. though brightness is not a good word in this case ,it is just that it is for ease of description.((NUFORC Note: Witness indicates that the date of the incident is approximate. PD))