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