Small tropical fruit or melon, generally between 2.5 and 4.0 inches from end to end. It's like a small yellow watermelon, except it has "large" spikes approximately 0.5 inches from end to end, shaped like large sharp cones. The skin is hard, so you could probably play baseball with it if the curves were more forgiving. These sharp objects protruding from the outside of the melon are usually between 0.5 and 0.75 inches apart.