Coconut in a golf court
It looks like somebody tried to do an experiment (carve tiny holes) on a coconut. That white thing would resemble a golf ball from a distance, even though golf balls are compact and have no holes. It also appears to have been stuck in a bigger hole.
When playing golf, if the ball gets stuck or falls into something, that is called obstruction. Obstructions can be natural (something that belongs to the field) or external (something that doesn’t belong to the area). Touching the obstacle is considered a penalty. Knowing that, would you say this ball is stuck in an external obstacle?