I went out to sunset cliffs yesterday at about 4 pm and the vis sucked. I was about 100 yds south of the stairs about 75yds out in about +- 12ft of water and the vis was about 6' or 7'. I was looking down with my gun pointed out in front of me when out of the corner of my right eye I saw the back half of a shark, I turned my body towards it as it swam slowly away. I estimated it to be atleast 6' long judging by the size of the tail, I guess it swam right beneath and between my buddy and myself,(he was about ten yds in front of me) it was right on the edge of where the vis got shitty and I'm pretty sure it was grey, however I CAN say for sure that it scared the shit out of me, it didn't seem agitated at all based on the way it was just cruising along, needless to say I swam back to where the reef sits just below the water because I'm a giant pussy and saw only a few perch and sargo after that. Has anybody seen any sharks besides leopards out there?