[1][2] The shell of Florida worm snail is light brown or tan in color with an apex that is white.

Vermicularia knorrii is strictly marine and does not live in brackish or fresh waters and is not terrestrial.

Unlike other Vermicularia species, the Florida worm snail does not form inter-coil structures but rather lives in hard substrates such as corals and sponges.

[8] When the shell is intact, the apex is pure white, somewhat translucent, and tightly coiled similarly to that of the genus Turritella.

[9] As they grow, Vermicularia shells start to uncoil due to the need to access food and to attach to substrate they live in stabley.

[11] Due to the Florida worm snail living in sponges and corals, it is sessile and does not actively hunt for food.

Vermicularia spirata is protandrous hermaphroditic with small males being free living and eventually attaching to substrate when switching sexes.