Nemo Had One Called the Nautilus
This page is the CodyCross answer for the clue below from All Things Water, Group 1292, Puzzle 3 (Hydrogen and Oxygen).
Question is: Nemo Had One Called the Nautilus
and the answer is: SUBMARINE
Word Meaning:
SUBMARINE — Being, relating to, or made for use underwater, especially beneath the sea.
Definitions from Wiktionary.