Some beach encounters unfold with the kind of timing that needs no setup. On the sand, a monkey reaches toward a diving mask and tugs at it as a person holds on. The filmer, Carla, told WooGlobe, ...

Juvenile rhesus macaques play above water. Source: Alyssa Arre, used with permission. The island of Cayo Santiago off the east coast of Puerto Rico is home to an unusual population of rhesus macaques.