Alitta virens (common names include sandworm and king ragworm; older scientific names, including Nereis virens, are still frequently used) is an annelid worm that burrows in wet sand and mud. They constuct burrows of different shapes (I,U,J and Y)  They range from being very complex to very simple. Long term burrows are held together by mucus.
Alitta virens (common names include sandworm and king ragworm; older scientific names, including Nereis virens, are still frequently used) is an annelid worm that burrows in wet sand and mud. They construct burrows of different shapes (I, U, J, and Y). They range from being very complex to very simple. Long-term burrows are held together by mucus.