This is Bradenton Beach under the light of a nearly full moon. I was taking pictures with a friend and everything was illuminated by the glow from the moon. Coming to the beach at night is an experience that is completely different from daytime. For me it's a meditative experience. The overwhelming sensation is the sound of the waves.
If possible I try to take pictures of people in night scenes like this. That's not always possible but with a moon glow and a high enough ISO it sometimes works. In this case there are people with a lantern at the end of the pier. Generally taking pictures of people during long exposures is not possible because when they move they appear invisible. To appear invisible is an oxymoron, but I digress.
Also when shooting at night around urban areas I'll get those light streaks in the sky from aircraft. Normally I don't notice them at the time but afterwards the streak is obvious. I suppose you could calculate speed based on the distance of the streak and the length of the exposure. Nevertheless these also occur with moving boats on the water.
Taking photos by the beach at night is a lot of fun. If I didn't have to get up the next morning I'd probably stay out all night. However I'll usually leave in a relaxed state of mind with the sound of the waves faintly echoing in my head. After that I have no problem falling asleep.