Three lights above the atlantic Costa Rican coast were seen by three people around 3 a.m.While volunteering and tagging leatherback sea turtles with two fellow volunteers (a Columbian woman and a native of Costa Rica), we witnessed three intensely bright lights making the shape of an equilateral triangle about 15 degrees from the horizon. The duration was about five seconds and no sound was made. The lights simply appeared then disappeared. As a research scientist in the United States, I only make conclusions based on a sufficient amount of evidence, so I can make no definitive conclusion for what we saw. However, due to the fact that all three of us witnessed the event, I am confident it was real. We were also in a very isolated part of the country, where there were no cars and only a couple of small plane flights came to the area during the daytime.((NUFORC Note: Source of report indicates that the date of the sighting is approximate. PD))