Lebrunia neglecta is an unusual sea anemone in that its tentacles are almost hidden by the ring of six much branching large frond-like pseudotentacles that grow up from the rim of the oral disc.

[2][3] It is very similar in appearance to the closely related Lebrunia coralligens, but the pseudotentacles of that species are much less branched, and often have swollen, double-lobed tips.

[2] Lebrunia neglecta is found in Bermuda, the Bahamas, the Caribbean Sea, the Gulf of Mexico and the north coast of Brazil.

It grows in reef environments at a depth of two to sixty metres (six to two hundred feet) with its column hidden in a crevice in the rock or in a massive coral head.

[3] The pseudotentacles of Lebrunia neglecta resemble the fronds of brown seaweeds in the family Dictyotaceae in appearance and it is possible that the anemone is mimicking the harmless alga in order to lure potential prey closer.