A starfish, more correctly called a "sea star" due to the animal having no relationship with fish, is considered an echinoderm.
Yes, they are invertabrates because they do not have a backbone/spine.
Yes, they are invertabrates because they do not have a backbone/spine.
Yes It Is A Invertibrate
a grasshopper is an invertibrate
yes yes it is an invertibrate
hag fish is invertibrate having skull but no vertebral column
no its an Arachnid
yes
because we have bones
Yes
yes it is
yes