description Mellita notabilis Overview
Mellita notabilis is a species of keyhole sand dollar, a type of flattened sea urchin belonging to the echinoderm family Mellitidae. Like other members of its genus, it is distinguished by its characteristic lunules, which are slots or holes that pass completely through its skeletal test. This marine species inhabits sandy coastal bottoms, where it burrows into the substrate, playing a specific ecological role in the benthic environments of the eastern Pacific.
help Mellita notabilis FAQ
What distinguishes the Mellita notabilis from other sand dollars?
Mellita notabilis is a living species of keyhole sand dollar distinguished within the Mellita genus by its lunules. These slots pass completely through its flattened test, setting it apart from species with solid shells.
Where does the Mellita notabilis typically live?
Like other sand dollars, this species is a shallow-burrowing echinoid found in marine sandy environments. It burrows just beneath the surface of the sand along the ocean floor to feed on organic particles.
What are lunules and why do sand dollars like Mellita notabilis have them?
Lunules are the distinct slots or holes that pass completely through the flattened test of the sea urchin. They help the sand dollar maintain its position in the sand and channel water flow to assist in feeding and burrowing.
How does Mellita notabilis eat?
As a burrowing echinoid, Mellita notabilis uses its small tube feet and tiny pedicellariae to capture organic particles from the surrounding sand. The food is then moved along specialized grooves on its underside toward its centrally located mouth.
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