A professor kept a pet worm for 20 years. It just set a record.

Environment Animals Wildlife A professor kept a pet worm for 20 years. It just set a record. Baseodiscus the Eldest lives a chill life in Virginia. Breakthroughs, discoveries, and DIY tips sent every weekday. Jonathan Allen, a biology professor at The College of William & Mary in Virginia, has a very strange pet: a very long ribbon worm () named Baseodiscus the Eldest, or just B for short.