hardbottom means A hard seafloor, typically a layer of sand covering rock. Lexicurio rates it Sui generis — a strength score of 86 out of 100.
Etymology
From hard + bottom.
noun
- A hard seafloor, typically a layer of sand covering rock.“Measures of seafloor topographic complexity were used as a proxy for the availability of hardbottom, since a comprehensive map of hard and soft seafloor sediments was also not readily available.”