[de.mer.sal] adj [L demersus (pp. of demergere to sink, fr. de- + mergere to dip, sink) + E [1]-al--more at merge] (1889): living near, deposited on, or sinking to the bottom of the sea "~ fish eggs"
DEMERSAL
Meaning of DEMERSAL in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012