The deeplet sea anemone was observed to have a symbiotic relationship with shrimp, as they cluster around its base in both temperate and Northwest Atlantic waters.

[5] It is found in closed off marine areas attached to hard substances such as stones, rocks, and shells.

[8] In 1860, Philip Henry Gosse expanded on Johnston's initial discovery of the anemone in 1832 and reported its physical description as having a pillar-like column, a smooth disc and surface, and short and thick tentacles.

As part of the genus Bolocera, the anemone has a developed muscle ring as the base of each tentacle but its column doesn't have an outer muscular layer.

The base will form the shape of a disc and grow, the mouth opens, the larva shorten, and finally the anemones become largely dormant.

[3] The deeplet sea anemone has many types of nematocysts capable of rupturing human red blood cells and, as tested in a 1977 study, killing mice.

BTTX II can interfere with the inactivation and activation of sodium channels in the muscle membrane of rats.

Overall, it has an effect on the membrane electrical properties of skeletal muscles while increasing the time at which the action potential is depolarized.