San Francisco 49ers quarterback Jimmy Garoppolo has an interesting comparison for what an NFL season is like. Apparently, he thinks it's like going down in a submarine.

“The season is like we’re in a submarine – we’re all in the submarine and we go down together,” Garoppolo said, via 49ers offensive assistant Katie Sowers (per The Football Girl Podcast).

Not sure I've ever heard that before, but, hey; whatever.

Garoppolo is coming off of a 2018 campaign in which he played just three games before tearing his ACL, which prematurely ended his first season as a full-time starting quarterback.

During the time Garoppolo was on the field before getting injured, he threw for 718 yards, five touchdowns, and three interceptions while completing 59.6 percent of his passes and registering a passer rating of 90.

The 27-year-old, who played his collegiate football at Eastern Illinois, was originally selected by the New England Patriots in the second round (62nd pick overall) of the 2014 NFL Draft.

Given the fact that Garoppolo was playing behind a certain future Hall-of-Fame quarterback named Tom Brady, he didn't exactly get much playing time with the Patriots, and midway through the 2017 campaign, he was traded to the 49ers.

He started five games during his first season in San Francisco, throwing for 1,560 yards, seven touchdowns, and five picks while completing 67.4 percent of his passes and posting a passer rating of 96.2.

As a result, Garoppolo was awarded with a massive contract extension last offseason.

The Niners won just four games this past season and have not made the playoffs since the 2013-14 campaign.