In article ,
(WalkerDlwalke) wrote:

For a someone well experienced in these
waters, or an icthyologist, its behavior is probably more of a clue.
Nearshore
in low vis water, in excess of 5 ft, when it jumped it was a low angle jump
and
without any twisting or contortions or anything like that.

The behavior is not that telling. Size is more a clue I think in your
case. Large fish that may be found in water of that depth would be
fairly limited (shark, tarpon, porpoise). There are large red drum but I
don't know that they jump. I know little about king mackerel but they
are caught 'nearshore' in that area.

Even after further checking I come up with nothing else that fits. An
ichthyologist may be your only hope.
--
"Atlanta Joe" aka Joe Webb
Flats fishing is Flat Fun!
Visit my site at http://flatsfisher.com