May sees drought conditions in the park, but the saguaro cactus is completely unaffected. A family of ground squirrels is laying low, but a long-nosed snake has caught their scent.

In the coastal town of Laguna, Brazil, a strong bond has formed between wild dolphins and local fishermen over generations. The dolphins herd schools of fish towards the shoreline and then give distinct signals telling the fishermen when to cast their nets.