No archeologist can afford the millions it costs to probe the sunless depths thoroughly, even though many shipwrecks beckon and much stands to be learned about humanity's past.

In shadows and the sunless depths of night?

But submarines have an unobstructed view of the sunless depths.

THE sunless depths aren't what they used to be.

The church basement is very gloomy, so my pupils are dilated wide-like those of a shark rising from the sunless depths to savage a luckless swimmer.

"But there are other possibilities" in the sunless depths of the sea.

For the radioactive core of the moon **** sufficient heat to maintain life upon it even in the sunless depths of the outer void.

He could sink to the sunless depth of a lonely sea with the memory of such a voice still living in his ears.

Hungry predators of the sunless depths have long used the ghostly lights of bioluminescence to attract the unsuspecting.

Down at these sunless depths, it was as if he had traveled to another world.