In the movie, when Leo is getting his shirt ripped off in the water after the camp-fire scene, it is night time. On the DVD title screen, if you wait a short time, clips play in the center and one of them is of that same scene, except this time, the sun is bright and it is obviously daytime.
Enlighten the rest of us - How this is a slip-up? That part you refer to on the title screen is NOT in the movie and counts for NOTHING! Don't waste our time.
The scene in the film is shown as night-time, but on the menu it is shown in daytime. This is because the scene was filmed in daylight (due to the fact that the scene would not be shootable at night with the effects on the water) Once filmed, the scene was edited to make it look like night. Hope this answers all of your questions.