ECHINODERMS
They live only in water. They have a hard body with armour plates or spikes.
Ex: Jellyfish and anemones
Live on land and in water. They have a soft and some of them have a shell.
They live on land and in water, They have an EXOSKELETON.
Molluscs
CNIDARIANS
Ex: Starfish, sea urchins
Ex: Snails and octopus
ARTHROPODS
Live in ONLY in water and some have TENTACLES and some SPINY SKIN
EX: Shrimp, butterflies