the.com/dredging
Scraping the bottom for treasure, sludge, or that thing you dropped.
means Removing mud, sand, and debris from the bottom of a waterway, often to deepen it or recover something buried.
from From Middle English 'dreg,' the sediment at a liquid's bottom — the literal bottom of the barrel, now an industrial verb.
Cooking cousinAlso means coating food in flour before frying.
Port lifelineHarbors need constant dredging or ships run aground.
Body recoveryPolice dredge rivers for evidence and the missing.