type B organism

in relation to sediment
https://doi.org/10.1351/goldbook.15120
Animal or plant living in contact with sediments and capable of ingesting particulates.
Note: The classification implies that such organisms take up substances from both interstitial water and from sediment-associated particulates.
Examples: Detritivorous organisms and suspension feeders.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 961 [Terms] [Paper]