Help! Milky oil.

HELP! I pulled the motor out of my 2012 Ultra Lx to replace the driveshaft bearing due to it leaking...

During pulling it.. I discovered the oil was milky 😬.. The ski has 230 hours on it.. And the headgasket was done prior to me purchasing it. The oil cooler also doesn't appear to have any holes in the passages. Is there any other way oil could have gotten into the crankcase?

Could it have been through the exhaust? I'm slowly gathering the history of this ski.. And it's had a rough life in saltwater.

I'm trying to cover the rest of my bases before I assume the headgasket is bad.. Or the head is cracked.

Thanks in advance