Local densities are influenced by many factors, including abundance of food, predators, and suitable habitat.

[8] Empty black turban snail shells are often utilized by another common intertidal animal, the hermit crab.

If the anterior portion of T. funebralis is touched by a predator, it can raise the front of the foot and make a 90° turn to escape.

[11] Archaeological evidence shows that humans have utilized black turban snails for over 12,000 years.

The analysis of middens found near Point Conception reveal that black turban snails comprised up to 60% of meat yields for the native people in that area.

Researchers speculate that the prevalence of eating these snails was probably influenced by the abundance of individuals and the ease of collection.