While we were enjoying the show, a German couple stopped to look. Then a Japanese family…dad, mom, a 6 or 7 year old boy and grandpa. Mom and the boy approached, and we pointed out the movement of the shrimp in the puddle. We had a moment of concern about what they might do (after witnessing a Japanese mom setting her toddler 2’ from the head of a grazing buffalo in Yellowstone).