Steve-O -- Will Do Jail Time For Crane Stunt (VIDEO)

Steve-O's latest stunt has landed him 30 days in the slammer.

The "Jackass" star was charged with 5 misdemeanors after setting off fireworks atop a Hollywood crane in a one-man SeaWorld protest. Steve-O copped a plea deal Wednesday, pleading no contest to trespassing and possessing fireworks. The other three charges were dismissed.

Under the deal, Steve-O has to turn himself in for a 30-day sentence in December with 3 years of probation. He also has to pay $7,409 in restitution fees and stay out of Hollywood temporarily. He can only perform pranks or stunts in the LA area during his probation ... if he has a permit.

However, Steve-O didn't seem too worried about the whole thing this morning at LAX.