Bottle Diver, my thoughts exactly. Since the
average depth of the ocean is more than twelve thousand feet,
deep to oceanographers--and many divers and other ocean afficionados--means certainly deeper than one can go on scuba.
So "fantastic deep sea creatures" to us conjures up big-eyed anglerfish with horrible looking fangs,
like you can see here.
On the other hand, my mother was born in the midwest and she used to announce--to my embarrasment--that her sons were "deep sea divers." And she called the sharks, turtles, octopus, dolphins, and colorful fish that were in the videos I made, "fantastic deep sea creatures." So I guess it matters what your upbringing is. Dreammusic, perhaps when you said "fantastic deep sea" creatures, you meant the the same thing my mother meant. That is, anything cool from below the surface that you can't see from a boat.
Since I sometimes shoot underwater video for commercial purposes, I am often looking for good quality, royalty-free licensed music. Dreammusic, do you have some samples in MP3 format, etc?