Matching Pairs InvertebratesOnline version Learn more about invertebrates by Luz Álvarez Herrero 1 ARTHROPODS 2 SPONGES 3 ECHINODERMS 4 MOLLUSCS 5 JELLYFISH 6 ANNELIDS They have a long, soft body divided into segments. Example: Earthworm They stay on the seabed They are protected from predators by hard skin or spikes Examples: Starfish 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 soft muscular body Examples: snail and octopus