a region including the bottom of the sea and the littoral zones
organisms (plants and animals) that live at or near the bottom of a sea
例句
The molluscs were the first in biomass and density of the benthos. 全年各类群生物中，平均生物量及栖息密度都以软体动物居首位。
Plankton and benthos monitoring was carried out in 2003. The results in main gulfs were shown as followed in table 3. 2003年，开展浮游生物和底栖生物监测，各主要港湾监测结果详见表3。
Coastal zones are important habitats to fauna, having a primary production for offering such as benthos and sessile organisms. 摘要沿岸海域一直是生物重要的栖地，并且提供像底栖生物或附著生物相当高的基础生产。
Holme N A,Mcintyre A D.1984.Methods for the study of marine benthos[M].Oxford:Blackwell sci. 沈韫芬;章宗涉;龚循矩.;1990
The result indicates that benthos is affected by dredging activity but the extent of the impact is limited. 结果表明:疏浚工程影响着底栖动物的生存,但其影响范围是局部的。
In 1986 and 1988 the authors sampled macrofauna benthos and investigated the distribution of biomass and density. 作者于1986年和1988年在连云港海域进行了底栖动物采样,调查得出了生物量和栖息密度的分布概况。
