Explain carcasses of
many a tall ship

In order to better understand the sentence, let’s dissect it.

“Carcasses of many a tall ship.”

What are many a tall ship? Many tall ships.

What are carcasses? Skeletons.

What do you think of when you hear “skeletons of many ships”? A dark or bright place?

Where are skeletons of HUMANS kept?

Carcasses of many tall ships lie in an underwater .

Carcasses of many humans lie in a .

(HINT: starts with the letter G).

Both of these answers are the same, and should explain what the sentence means.