The tentacles at the edge of the umbrellas are solid or solid and hollow, there is a thickened tissue ring that has a large number of nematocysts, the radial canals number from 4 to 6 to 8 and more than 8, though 8 is the most common amount found.

The sensory clubs can be open or closed with the endodermal axis.

[1][2] Primarily found in the deep ocean, where they are recorded at depths of seventy to two thousand metres.

[3][4] Interactions with humans are few as this species primarily occurs at great depth.

Although it has been found that hydrozoans have increased in numbers in recent years, the increase in Liriope tetraphylla, a species of Trachymedusae, does not appear to be affecting the total zoo-plankton populations they prey upon within the Sea of Marmara.