1
They have skeleton, some have spines and they are marine animals.
2
They are aquatic and they have tentacles. Ex: jellyfish
3
They are oviparous. Some have shell to protect their bodies.
4
They are aquatic, the live attached to a rock, they cannot move and they have spores.
5
They can be aquatic or terrestrial, they have long bodies, the don´t have legs.
