Mr. Krabs' Miniature Enemy
This page is the CodyCross answer for the clue below from Architectural Styles, Group 1168, Puzzle 2 (Domed Ceilings).
Question is: Mr. Krabs' Miniature Enemy
and the answer is: PLANKTON
Word Meaning:
PLANKTON — (uncountable) Organisms, especially small and microscopic ones, that drift in water.
Definitions from Wiktionary.