A spiny skinned invertebrate is called a sand dollar. That is because they are are echinoderms (a type of invertebrate),
arthropod
An Anthropoda
arthropod
Ocean, River, pond
an invertebrate
It is an insect.
Invertabrate animals
invertebrate
It is a type of trap that a invertebrate gets caught in.
Animals support their bodies in different ways. In most cases, animals will use their limbs to support their entire body.
A caribou is a type of deer and an invertebrate is an animal without a backbone. Caribous do have backbones so they are a vertebrate.