Essentially sessile benthic organisms

{
  "id": "MLC-T-ENV-010081",
  "term": "Essentially sessile benthic organisms",
  "field": "Environment",
  "term_source": "Essentially Sessile Benthic Organisms",
  "definition": "Organisms that essentially stay at or near a localized spot in a water body during the adult stage of their life cycle (e.g., barnacles, oysters, muscles, sponges, and stalked diatoms). These organisms may not live on the bottom, but must not live suspended in the water column. They may be attached to rocks, pilings, or submerged banks at or near the surface. Samples from these organisms should be limited to the adult forms and can be used in the HRS for two purposes: 1.To establish an observed release (use any essentially sessile benthic organism); and 2.To establish actual contamination and the level of contamination (use only human food chain organisms).",
  "subject": "Health and safety",
  "references": [
    "Hazard Ranking System Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/essentially-sessile-benthic-organisms/"
}