The dim fingers of fog come floating from the formless waste and sunless seas.

A colourless murk, aqueous and acrid, the bottom of a sunless sea.

We wondered whether there were any actually igneous manifestations below, and whether the waters of that sunless sea were hot.

Space couldn't harm him; he swam in it like a shark in a sunless sea.

Far from the city, protected by the ancient crater lake of the sunless sea, the laboratory had a deceptive exterior placidity.

So that is the reason that Lari's mother drowned herself in the sunless sea to save her infant son.

He went on down to the sunless sea and huddled in the diminishing current as the last of the water drained out the bottom.

"I did conjure a dead fish to replace you in the sunless sea," Sheen said.

Don't you remember how we had to go downhill to reach the sunless sea?

Was it rushing through endless caverns, down to some sunless sea?