He went as far as to complain to the NFL about it.
Harbaugh claimed cornerbacks Richard Sherman and Brandon Browner were maybe a little too physical with his wide receivers.
Sherman actually played for Harbaugh at Stanford, where the head coach suspended Sherman for one game after he was issued a personal foul during the season.
Carroll responded with these quotes to ESPN on Monday:
"I don't think a guy should be able to speak out and go ahead and cause an investigation," he told ESPN Seattle on Monday. "That's too easy. I don't think that's going to happen.
"... Wasn't it just a couple week ago, when (the 49ers) were talking about not doing things like that, with the Giants or Kevin Gilbride or something like that," Carroll said. "I thought there was something about that, where we don't go out and express our concerns at all."
"I think that this was a very normal game ... in terms of how we played," Carroll said. "I'm surprised that (Harbaugh) felt like the receivers were so overwhelmed. I thought our guys did a good job. There's always going to be some calls that you can look at, but our guys played good, solid, hard football. Vernon Davis didn't get the ball and their receivers didn't do much, and Randy (Moss) got one, so I'm sure there's a little frustration there.
"If the officials look at it, they won't have anything to even look at, and I don't even think they need to. It's a regular game."Seahawks wide receiver, and another Harbaugh-coached player at Stanford took to Twitter with his reaction:
Jim said Sherm and BB were playing too rough. Hahahahahahahahahahahahahaaahahahhahahahahahahahahahahahahahahahaha— Dbfresh (@DougBaldwinJr) October 20, 2012