Where does “seafloor” come from?

I need to flag a critical issue: the etymology chain provided is incoherent and cannot support a valid summary. The chain shows: - English "sea" ← Middle English "see" ← Old English "sǣ" ← Latin "florem/flos" ← PIE "sed-" ← PIE "bʰel-" Problems: 1. Old English "sǣ" (meaning "sea") does not derive from Latin "florem/flos" (meaning "flower/bloom"). These are completely unrelated words from different language families. 2. The chain lists PIE "sed-" twice consecutively, then "bʰel-" with no explanation of how they connect. 3. "Seafloor" is a compound (sea + floor), but the chain only traces "sea," not "floor." **I cannot write an accurate one-

seafloor (English): The bottom of a sea or ocean

Definitions

  1. The bottom of a sea or ocean

Ancestry of “seafloor”, step by step

seafloor traces back through two separate lines of ancestry.

via English sea

StepLanguageWordMeaning
1EnglishseaA large body of salt water; A lake, especially if...
2Middle Englishseesea, ocean; A body of water, a lake; seat, chair
3Old Englishsea, lake
4Proto-West Germanicsaiwisea
5Proto-Germanicsaiwizsea, ocean
6Proto-Germanicsīhwanąto filter
7Proto-Indo-Europeanseykʷ-to moisten; to filter
8Proto-Indo-Europeansey-to be wet; dribble; run; to stretch one's arm;...

via English floor

StepLanguageWordMeaning
1EnglishfloorThe interior bottom or surface of a house or...
2Middle EnglishflorA floor; the bottom surface of a room or...
3Old Englishflōrfloor, pavement, ground; floor, pavement, ground,...
4Proto-Germanicflōrazground; floor
5Proto-Indo-Europeanpleh₂rosflat; floor
6Proto-Indo-Europeanpleh₂-flat

Words derived from “seafloor

Every word from Proto-Indo-European sey-Every word from Proto-Indo-European seykʷ-Every word from Proto-Germanic sīhwaną