Freshwater is often the stage on which millions of animals gather to find a mate. And the cycle of freshwater is the trigger for spectacular mating rituals and fierce competition.
The jungles of the sacred city of Polonnaruwa in Sri Lanka are home to 33 identified troops of toque macaques and one man. This is the extraordinary story of Dr. Wolfgang Dittus, a scientist from the Smithsonian Institution who, over decades, has tracked and documented the lives of thousands of monkeys, revealing a complex society that is in many ways like our own. His journey is captured through his own words, footage he's taken over the course of 50 years, and his interactions with the scrappy, cheeky monkeys he's dedicated his life to.
2018 • Nature
Elephant seals are the first animals to return to the beaches of the subantarctic islands in spring, forming large breeding colonies, where the males fight fierce battles to gain and retain permanent access to a large number of females. They mate with the females as soon as they are receptive again. Millions of Macaroni Penguins form huge colonies on the islands to breed.