seafloor.

The ground forming the bottom of a sea or ocean.

Use it for

Words that belong together

• deep seafloor
• seafloor sediment

On the page

The camera revealed ridges across the seafloor.

Usage notes

Primary category: setting / environment. Forms: Singular seafloor; plural seafloors. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.