Whether the manatee is indigenous or not, it is here. Well, there.
Here in the Northeast, I see deer carcasses beside the road everyday
on the way to work.

In Lee County the manatee is in a very similar position. Just like your deer
population has exploded, so has the manatee population. Counts show almost
twice as many as they saw less than a decade ago. This is the dirty little
secret SMC and others try to sweep under the rug. The numbers are there to
delist the manatee but it is political correctness that stops it. If you are
willing to accept a drastic cut in your speed limits (like 25 mph on the
beltway) to save Bambi you have some credibility but if you are not willing
accept this, why load it on us.