单语范例（未经PONS编辑处理）
Close to the seabed live demersal fish that largely feed on pelagic organisms or benthic invertebrates.
en.wikipedia.org It is found on the seabed in areas of sand, gravel or crushed shell and among boulders to a depth of about.
en.wikipedia.org His diving companions, including an instructor and his then-14-year old son, eventually found him lying unconscious on the seabed.
en.wikipedia.org It is a sandy brown colour and is partially buried in the sediment on the seabed with the two siphons projecting.
en.wikipedia.org Coordinated movements of the spines enable sand dollars to move across the seabed.
en.wikipedia.org