LONDON — Caged and barely clothed, eight men and women monkeyed around for the crowds yesterday in an exhibit labeled "Humans" at the London Zoo.

"Warning: Humans in their Natural Environment" read the sign at the entrance to the exhibit, where the captives could be seen on a rock ledge in a bear enclosure, clad in bathing suits and pinned-on fig leaves. Some played with hula hoops, some waved.

Visitors stopped to point and laugh, and several children could be heard asking, "Why are there people in there?"

London Zoo spokeswoman Polly Wills says that's exactly what the zoo wants to answer.

"Seeing people in a different environment, among other animals ... teaches members of the public that the human is just another primate," Wills said.

The exhibit puts the three male and five female "Homo sapiens" amid their primate relatives. These eight have divided interests, from a chemist hoping to raise awareness about apes to a self-described actor/model and fitness enthusiast.

For others, the aping around is just another forum for rampant exhibitionism and self-promotion.

Melissa Wecker, 21, was disappointed that the humans were wearing swimsuits beneath their fig leaves. "They're not doing anything. It looked lots better on the news."

Tom Mahoney, 26, decided to participate after his friend sent him an e-mail about the contest as a joke. Anything that draws attention to apes, he said, has his support.

"A lot of people think humans are above other animals," he said. "When they see humans as animals, here, it kind of reminds us that we're not that special."

Like the rest of their caged neighbors, the humans had a variety of toys to keep them entertained — board games, music, paints and balls.

They are being treated as animals, complete with keepers, but are allowed to go home each night at closing time. The exhibit runs through Monday.