Engine Trouble new Boat

[Eesctom]

My boat is a week old and took it out fishing today. I was out yesterday and everything was running smoothly. I have a new Merucry 150 DFI Optimax engine. Aftr launching the boat we idled about 2 minutes away from the ramp, stopped the motor and started fishing. After about a minute my kids asked me why there was a rainbow in the water. I looked and there was oil draining out of the engine. I thought maybe it flooded or something so I idled the engine around for about 3 minutes and then cut it off. It was still spilling oil. I put the boat back on the trailer and it looks like the big black hose (which look like the fuel line or oil line for the oil mixer) was leaking some oil. It also looked like the oil may be dripping from the engine itself but this could have been capillary action as it ran diwn the engine. The engine has about 2.5 hours of running time on it. I'm taking it to the dealer tommorow but anyone have a guess what it might be? (I'm hoping just loose line or something).