2 hovering discs probing ocean water

I should have reported this back in 1990, but I had no idea where I could report such a thing to.  
I came home at 12:15am to my  oceanfront condominium, relaxed and watched TV.  Approximately 12:30am, I checked my sliding glass door, looking out to the ocean.  I saw a peculiar object hovering over the water with lights shining down and what appeared to be some sort of "probes" reaching into the water below.  I was stunned and just stood there wondering if my eyes were deceiving me.  
I then saw the hovering object pull in the "probes" and ascend back up to what appeared to be a larger hovering object up above, higher in the air.  I assumed it to be some sort of "mother ship".  
After ascending, it descended after a few (?) minutes.  This process repeated approximately 3 times.At this point, approximately 3 hours had passed. I had to get a closer look, although I was fearful.  I walked out on my balcony and saw the lights shine towards me on the coast.  I was horrified thinking this "thing" was going to chase me!  
I ran back in to my condo and slammed the door.  I watched from inside once again.  At this point, it ascended midway to the "mother ship" and took off at a very high speed, South, down the coast and disappeared from sight.  I was so frightened, living alone.  
I wanted to leave my condo, but I was too fearful after what I saw.  Although, it was frightening, somewhat, it was truly amazing and something I have never forgotten after 15 years.  As usual, most of the people I reported this to, just laughed it off.  
I felt this was worthy of reporting to your fine organization after I learned about you after watching the Peter Jennings special on UFO's.  Keep up your good work!
Witness indicates that date of event is approximate.  PD