Macrochaeta helgolandica is a species of segmented worms in the family Acrocirridae. It is a surficial modifier. It is a surface deposit feeder. Macrochaeta helgolandica is a facultatively mobile animal.
Definition: An organism which obtains food primarily by surface deposit feeding. Reid WDK, Wigham BD, McGill RAR, Polunin NVC (2012) Elucidating trophic pathways in benthic deep-sea assemblages of the Mid-Atlantic Ridge north and south of the Charlie-Gibbs Fracture Zone. Mar Ecol Prog Ser 463:89-103. doi:10.3354/meps09863
Definition: directly or indirectly modulating the availability of resources to other species, by causing physical state changes in biotic or abiotic materials; modifying, maintaining and/or creating habitats