World’s Largest Pill Bug

  • World’s Largest Pill Bug (Bathynomus)
  • World’s Largest Pill Bug (Bathynomus)

The World’s Largest Pill Bug, a crustacean distantly related to shrimp and crabs, lives in deep waters around the world, including off Florida’s Gulf Coast. Some cultures adore this crustacean and honor it with cell phone cases and stuffed animals.


World's Largest Pill Bug by Mandy Bemis

Many people are familiar with Pill Bugs, also known as Rolly-Pollies. This little beauty here, whose scientific name is Bathynomus giganteus, is the largest Pill Bug in the world and he can be found right here in the deep waters off the Florida coast.

Despite the familiar body plan, I’ve often heard people say that this animal looks like an alien, and people have even gone so far as to say that he looks creepy, but Bathynomus is not without his share of adoring fans. If you find yourself drawn to this charismatic crustacean, you might consider showing your devotion by acquiring some of the Bathynomus-themed swag that is available for people like us, including stuffed animals, phone cases, tea strainers and even a CD.

Mandy Bemis
Assistant Collection Manager, Invertebrate Zoology
Florida Museum of Natural History


World’s Largest Pill Bug (Bathynomus giganteus)
From Gulf of Mexico, Aug. 1987

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