Hard shell aquatic or semi aquatic fish i guess you can say that sheds its shell to grow
There is no proof that aliens exist. If they do, it is possible that alien races could have hard and soft invertebrate characteristics.
invertebrates are animals without backbones
One of the characteristics of many invertebrate groups is that there bodies are made of very many segments. Examples include the worms, spider, starfish and insects.
Krill is a shrimp-like marine invertebrate animal
Invertebrates do not have spines (backbones). See related questions and links for more information.
They don't have a backbone and have all the characteristics of a chordate.
Some characteristics of sponges are that they are invertebrate animals. They normally are asymmetrical. They never have tissues or organs. They feed through filter feeding. They reproduce asexually and sexually.
An arthropod is an invertebrate. It has to have a hard shell and more than 2 legs. Wasabi from Ben Ashmore
An arthropod is an invertebrate with an exoskeleton, a segmented body, and jointed attachments called appendages.See the Related Link.
A crayfish is a crustacean, which means that it has a shell and does not have a backbone, therefore it is an invertebrate.It has an exoskeleton, meaning its support is on the outside, not on the inside.It is an invertebrate.
An arthropod is an invertebrate with an exoskeleton, a segmented body, and jointed attachments called appendages.See the Related Link.
the characteristic of planaria is has a smooth body and planarian is no have a backbone because planaria is a invertertibrate and invertebrate animals are no have a backbone