Familia Cucumariidae

Ludwig, 1894

True Sea-cucumbers

Sea-cucumbers of the Order Dendrochirota with a more or less cylindrical or fusiform body, not flattened. The ventral side does not form a thin-walled sole.
The tube-feet are either confined to the radii or distributed all over the body. The mesentery of the posterior intestinal loop is located in the left ventral interradius.

This large family is divided into two sub-families: Cucumariinae and the Phyllophorinae.

Treated taxa:
- Subfamily Cucumariinae
- Subfamily Phyllophorinae