Two stand up paddlers got a toothy surprise off an L.A. area beach ... when a freakin' GREAT WHITE SHARK swam right up next to them -- and TMZ has some sick drone cam footage!
It all went down Monday in the water off Manhattan Beach. Photographer Bo Bridges was in the water with a couple of buddies when they noticed they had company ... in the form of a baby great white.
Bo tells TMZ he went back to shore to launch his drone cam ... while his 2 buddies made the questionable choice to stay in the water.
In the video you can see the shark -- which they estimate to be around 6 feet -- is only 100 yards or so from the very popular beach.
Bo spends a ton of time in the water shooting for Bo Bridges Gallery ... and says it's pretty common to see baby great whites this time of year. Still ... baby sharks have teeth.