|  Acorn worm
 Phylum Hemichordata
 Class Enteropneusta
 |  |  |  |  | 
         
          | Unsegmented 
            worm. The worm is seldom seen, but its long coiled cast of mud or 
            sand is often seen. Sand bars, sandy areas near seagrasses. Commonly 
            seen on many of our shores. | 5-10cm. 
            Unsegmented worm. Ridges on body like the texture of a peanut shell. 
            Soft silty ground, sandy areas, near seagrasses or mangroves. Sometimes 
            seen on some of our shores. | 5-10cm. 
            Unsegmented worm. Ridges on body like the texture of a peanut shell. 
            Soft silty ground, sandy areas, near seagrasses or mangroves. Sometimes 
            seen on some of our shores. | About 
            5cm. Segments not distinct, with long tentacles and a pointed head. 
            Silty areas near seagrasses. Sometimes seen on our Northern shores. |  | 
         
          |  |  |  |  |  | 
         
          | 10-15cm. 
            Unsegmented worm. White to beige with one blue to black stripe and 
            two black cross-bars on the head. | 10-15cm. 
            Unsegmented worm. Uniformly red or orange. | 20-50cm. 
            Unsegmented worm. Pink or orange, often the head and tail paler with 
            dark or black tip. | 20-30cm. 
            Unsegmented worm. Dark striped on upperside, underside plain and white. | 40cm-1m. 
            Unsegmented worm. White to beige with five blue to black stripes. 
            On coral rubble. Sometimes seen on some of our shores. |