Mike Clark had held the position of strength coach for the Seahawks for the last six years.
The video above gives you a good idea of what Carlisle is about.
According to this report from the Green Bay Gazette, Carlisle will be joined by Green Bay assistant strength and conditioning coach Mondray Gee, 33.
Carlisle becomes the fifth member of USC's staff to join Carroll, along with offensive coordinator Jeremy Bates, linebackers coach Ken Norton Jr., special teams coach Brian Schneider and Matt Capurro, who served as USC's director of football operations.
This is the first I heard of Capurro heading north. With his skill set, having served as an assistant to several Los Angeles Raiders head coaches, including Lane Kiffin, I would think he's joining the team as a quality control guy or an assistant to Carroll.
Carlisle, 47, was named the 2006 National Collegiate Strength and Conditioning Coach of the Year by the Professional Football Strength and Conditioning Coaches Society.
Also, former Seahawks defensive back coach Tim Lewis joined the Atlanta Falcons as their defensive backs coach.