100days-a-year:
.We watched them patch in sections several years ago from a freighter grounding,the reef heals fast there.
Ah yes, the notorious "Looe Key fart grounding".
That wasn't a freighter, it was an oceanogaphic research ship doing sidescan passes. Ships aren't permitted inshore within the Florida Keys National marine Sanctuary without special permits, as they have a tendency to wreck. Case in point, albeit an odd one.
Someone let a huge fart in the bridge, and everyone ran out, leaving the ship on autopilot. The autopilot runs smack over the forereef so hard, it can't be pulled off till the next day by a tug. By that time all the ship's rocking back and forth wrecked more reef than the initial damage.
The university that owned the ship was so stigmatized that they sold it. I think it was the captain's second or third slip-up... not sure what happened to him. The reef restoration was a multimillion dollar effort, using anchored barges and huge blocks of sculpted concrete.
Smaller boats ground frequently on Looe Key, but many aren't reported if the owner gets his boat off without being noticed. I've seen it a few times myself. There was a cabin cruiser that ran aground at night on the nearby Newfound Harbor reef back in '97 I think... that thing plumb blew up and you can still find traces of hull paint on the coral.