This behavior is far from unusual -- dolphins often play in boats' wakes. In March, The Dodo spoke to marine mammal scientist Naomi Rose of the Animal Welfare Institute to better understand dolphin surfing:
"This is a common behavior in certain places -- the whales I studied in British Columbia, Canada did this," Rose said. "It's called wake-riding and they are doing it for fun. They are literally surfing -- they can go very fast with very little effort when riding in the wake of a boat like this."