An article in Discover for last December has a very interesting article about scientific exploration of hydrothermal vents in Indian ocean, five miles below the surface. Which reminded me of a word I accidentally found in dictionary:"hadal" designating or of the ecological zone (hadal zone) of the ocean floor trenches below c. 3,300 fathoms (c. 6,000 m)

How in Hades would I know how it is pronounced? Hey, deez is a joke.

:"hadal" designating or of the ecological zone (hadal zone) of the ocean floor trenches below c. 3,300 fathoms (c. 6,000 m)

Well, then what designates ocean floor trenches above 3,300 fathoms (c.6000 m)?

And how is this hadal pronounced? I know I could LIU, but I'd rather see it spelled out here.

Best regards,
BubBub