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Annelids: Annelids: WormsWorms Bodies are divided into segments. Bodies are divided into segments. Have very well-developed internal Have very well-developed internal
organs. organs. Some have long bristles, some have Some have long bristles, some have
short. Others seem smooth.short. Others seem smooth. There are about 9,000 species of There are about 9,000 species of
Annelids known today, including Annelids known today, including worms and leeches. worms and leeches.
Arthropod: InsectsArthropod: Insects Largest group of arthropods (over 800,000).Largest group of arthropods (over 800,000). Are very adaptable, living almost Are very adaptable, living almost
everywhere in the world. everywhere in the world. Have an exoskeleton that covers their entire Have an exoskeleton that covers their entire
body. body. An insect's body consists of the head, An insect's body consists of the head,
thorax and abdomen. thorax and abdomen.
Arthropod: InsectsArthropod: Insects
Echinoderm: Echinoderm: StarfishStarfish Marine animals that live in the ocean. Marine animals that live in the ocean. Have arms or spines that radiate from the Have arms or spines that radiate from the
center of their body. center of their body. Central body contains their organs, and their Central body contains their organs, and their
mouth for feeding. mouth for feeding. Sea stars, commonly known as the starfish, Sea stars, commonly known as the starfish,
have 5 or more arms attached to their body.have 5 or more arms attached to their body. Sea urchins have many spines connected to Sea urchins have many spines connected to
their body. These spines help to protect their body. These spines help to protect them from predators.them from predators.