What kinds of food do lamp shells eat?

Lamp shells, which are members of the phylum Brachiopoda, feed using a specialized structure called the lophophore.

The lophophore is a loop-shaped organ located within the mantle cavity that is lined with ciliated filaments. These filaments create water currents that direct food-bearing particles toward the animal's mouth, which is positioned on the body wall between the branches of the lophophore.1

It is important to note that lamp shells are distinct from lampreys, which are jawless vertebrates that may feed on the blood and tissues of host fish. Additionally, while some other marine invertebrates like mollusks consume a wide variety of food sources—ranging from microorganisms and detritus to algae and other animals—lamp shells rely on the ciliary currents generated by their lophophore to gather their food.231