Those nasty marine-wounds always seem to take forever in healing.
I've painfully encountered barnacles & coral enough, that whenever Hanks lands on some in Castaway, it kinda hurts me too.
When I was about the same age, my family had moved from the U.P. down to Florida, and one of the first things we did was take the 25ft cruiser out for some fishing. At some point, my stepdad caught a massive channelcat; it was causing quite a mess when he landed it, so he planted his boot hard, directly behind its head..... Or so he'd planned.
See, up in the cold deep freshwater & shallow, fast rivers, fish normally don't have the kind of dorsal spines that can pierce a boot; and if they do, you can see 'em.
So that catfish, while thrashing around flat on the wood deck, had it's spines laid flat & retracted; but it must've seen the shadow, felt the increased tension, and wiggled forward enough so that his stomp missed. He'd had the rod in one hand, trying to control the line & fish with the other.
It happened in a flash; down came the boot, and then I distinctly remember seeing at least two spines exit the top of his foot.
The hysteria (thanks Mom!), activity, and swearing that followed was pretty instructive, along with the fact that saltwater fish aren't to be fucked with, and the only way to immediately kill a catfish is with a machete.