Took my boat out all forth of july weekend and on mon night I noticed this strange goo all over the drive!

So I pulled the drive and this is what I found !!
any ideas here?

Gear lube mixed with water, just need to figure out where water is getting in.

More than likely your prop shaft seal is failed and allowing water into the drive. This causes it to overfill and push out the input shaft seal. Any shop that does drives can pressure check and find the leaking seal(s). If you caught it early enough then it will need to be resealed and you're good to go.

Ok thanks getting it pressure tested today to figure out what went wrong...... thanks again