John Gill Commentary Psalms 107:24

"These see the works of Jehovah, And his wonders in the deep." — Psalms 107:24 (ASV)

These see the works of the Lord
In creation, the sea itself, its flux and reflux; the creatures in it, fishes of various forms and sizes: and in providence, in preserving ships and men in the most imminent danger, and even to a miracle; sometimes causing the wind to change or to subside in a moment, whereby deliverance is wrought.

And his wonders in the deep ;
the strange and wonderful creatures that are in the deep waters of the sea, and to be seen nowhere else; and the amazing appearances of divine providence, in delivering when in the greatest distress, and none at hand to help, and all hope of salvation gone.