Yes, they don't have a bony skeleton. Their hard outer casing is called an exoskeleton and gives the body its shape.
yes
yess
yes they are
they are invertibrates I mean they are including of a family of a invertibrates animals.
No they have bilaterial symetry.
Invertibrates.
They are invertibrates
under the ground
Invertibrates
invertibrates
yes
dont step on them.