"Oh my goodness, I saw all those crabs and I said, 'Wow!'" Dan Scovern told WPTV on Friday of the creatures. In a video posted online, Scovern says they were "rained out of their holes" following heavy rain that hit the area.
The crabs – of which there appear to be dozens – are attached to and crawling along the homeowner's porch screen.
"They're everywhere! All over the screen!" he said. "Look at 'em. ... They're more scared of me than I am of them."
Scovern told the news station the crabs were "a good 6 inches, 7 inches long. They were a pretty good size with real big claws, real big crab claws."
Eventually, the land crabs fled. The homeowner said in his video the "invasion" has happened before — sometimes even "once a year, crazy."