Discuss as:

Surprise guests make quite a buzz at Boston University's commencement

Jessica Rinaldi / Reuters

Boston University manager in Facilities Management and Planning and beekeeper William Murray removes a chair covered in a swarm of bees at the Boston University commencement 2012 in Boston, Mass., May 20.

From the University of Nebraska's Entomology Department:

Honey bee swarms are a favorite topic of people who make horror movies. Actually, they are one of the most beautiful and interesting phenomena in nature. A swarm starting to issue is a thrilling sight. A swarm may contain from 1,500 to 30,000 bees including, workers, drones, and a queen. Swarming is an instinctive part of the annual life cycle of a honey bee colony. It provides a mechanism for the colony to reproduce itself.

Read more about bee swarms.

Jessica Rinaldi / Reuters

A swarm of bees covers a chair in the audience seating at the Boston University Commencement 2012 in Boston, Mass., May 20.