From MarineBiotech Infopages
A detached elevation of the sea bottom comprised of material that is not rock, that may endanger surface navigation. Also, to become shallow gradually; to cause to become shallow; to proceed from a greater to a lesser depth .
- Coastal Practice Network "CoPraNet": ICZM Glossary of Terms. Available online www.coastalpractice.net/glossary/index.htm, consulted 24/07/2012.