Class
Common name: Peanut Worms
Scientific name: Sipunculidea
Peanut worms, or Sipunculidea, are a class of marine worms notable for their retractable introverts and unique feeding habits. They are not common in the reefkeeping hobby but can be interesting additions due to their burrowing behavior and detritus consumption. Peanut worms are generally harmless to other tank inhabitants and can help maintain substrate cleanliness. They are best suited for tanks with a deep sand bed where they can burrow and perform their natural behaviors.