subaqueous

adj

1. (not-comparable)Existing below the water surface.

   “subaqueous deposits”

2. (not-comparable)Designed for underwater use.

   “a subaqueous helmet”

3. (not-comparable)Weak and filtered.

   “subaqueous light”

   “The room was dimly lit by a subaqueous light filtering through a green blind, and Rita had to edge her way round a double bed that barely allowed room to reach a bedside table, for the room, like every other apartment in the house, was clogged with old furniture.”