Mark,
I hope that "misplaced creature" comment doesn't include New Englanders
visiting Florida!!
Seriously though, if cuttlefish do inhabit Florida/Caribbean waters, surely
the "cuttlebone" (the internal "shell" of the creature) would be found on
the beaches.  Cuttlefish are typically shallow water animals, as far as I
know.  The cuttlebone is rather large (4 to 6 inches in length) and white,
and would be fairly hard to miss, though some folks might not know what it
was if they found it - they might mistake it for a piece of styrofoam.  (If
you don't know what it looks like, check the bird section of your pet store.
Cuttlebone is sold as a calcium source for birds - though they are often
trimmed to fit into the package.).  Also, cuttlebone is less dense than
water, so it would rise to the surface and float ashore after being released
from the decaying body of a dead specimen (just the way Spirula shells are
released).  So, I find it hard to imagine that these animals would be
inhabiting a particular area without the evidence washing ashore at least
occasionally.  Has anyone ever found a cuttlebone in the Florida/Caribbean
area?
Regards,
Paul M.