Relier Pairs InvertebratesVersion en ligne Learn more about invertebrates par Luz Álvarez Herrero 1 ANNELIDS 2 ARTHROPODS 3 JELLYFISH 4 MOLLUSCS 5 ECHINODERMS 6 SPONGES They have a soft muscular body Examples: snail and octopus They are the most common group on Earth. The biggest group are insects. Example: crab, ladybug They are protected from predators by hard skin or spikes Examples: Starfish They have a long, soft body divided into segments. Example: Earthworm Soft body called umbrella and long tentacles They stay on the seabed