Sandbox trees are a forest tree that grow to 200 feet. Their numerous sharp spines on the bark protect them from predation, and earn them the nickname Monkey No Climb. Their seed pods (above) use explosive dehiscence to spread the seeds as far as 330 feet. They make such a loud noise when exploding that another nickname for this tree is dynamite tree. The seeds, an open one shown above, are commonly found around the trees. Since the side of the seed is shaped a bit like a bottlenose dolphin, art

The sandbox tree is a terrifying species covered in sharp spikes that make it unsettling to look at. Its trunk is filled with cone-shaped thorns so tough that even monkeys can’t climb it, which is why it’s also called the “monkey-no-climb tree.” But the spikes are only the beginning. Its fruit is poisonous and, as it matures, dries out on its own. Because the inner and outer layers shrink at different speeds, enormous tension builds inside, like a tightly wound spring. When fully ripe, a slight