This photo may help explain why the people in yesterday's photo were not looking at the sunset when they were returning from a snorkeling and sunset cruise. Although they had their backs turned towards the sunset I showed yesterday, here is the view that awaited them as they returned to the beach.
The above photo shows the palm trees that line the beach and sky catching the rays of the setting sun. The colors of Tamarindo sunsets are more remarkable when you consider that the sun sets in the opposite direction, over the Pacific Ocean, and I took this picture on the beach looking east, with my back to the setting sun.
If you click and enlarge the photo, you can see the outdoor seating areas of a few of the beachfront restaurants under the palm trees.