Fun Facts!

• The phylum Annelida consists of over 22,000 species. 

• Some annelids are capable of regeneration. If they are cut in half, they can grow into two new worms. 

• Their blood contains hemoglobin that turns it the color red, just like humans!

• Most annelids will die if their skin dries out, that is why they like moist environments.

• Even though annelids do not have eyes they can sense light.

Key Characteristics:

• Segmented: the body consists of repeated identical segments.

• Body: have a true body cavity, complete digestive system, nervous system and brain.

• Respiration: they breathe through their skin since they lack lungs.

• Reproduction: some have separate sexes while others are hermaphroditic, meaning they have both male and female sex organs.

• Symmetry: bilateral