APED: "beneath"

There are things that wait beneath
the surface and remain unseen,
like shipwrecks, mermaids, krakens' teeth,
corals white and red and green,
oozy weeds that twist about,
oozy men, who lie therein,
who tipped their boats while sailing out
and haven't yet come back again.
And treasure, too, in gold and gems,
and forms of life as yet undreamed,
that beckons fancy, leaves unstemmed
mens' desires, wants, and needs --
imagination, in the end,
is dark and deep, much like the sea.