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