The family of box crabs and shame crabs, characterized by their compact rounded shells and ability to retract their claws completely into their carapace.
Scientific family classification based on the genus 'Calappa,' with the suffix '-idae' indicating biological family rank in zoological taxonomy.
The Calappidae family demonstrates evolutionary engineering—their shells evolved into perfect defensive chambers that rival any medieval knight's armor.
Complete word intelligence in one call. Free tier — 50 lookups/day.