A selection of mermaid videos from youtube. If you are looking for Mermaid Movies click here.
Youtube has lots of videos that are really the same or have the same information or scenes so I have selected a bunch and you may go there when you see something that interests you.
The first video is the mermaid song scene from Pirates of the Caribbean: On Stranger Tides, this is the song itself for other related scenes and behind the scenes videos see youtube.com:
Here's a time-lapse video of a man sculpting a mermaid in the sand. Note: no actual mermaids were harmed in it's production.
Lots of videos claim to have evidence of the existence of mermaids but they're really just nonsense. This one is a nice explanation of one that you have probably seen before, perhaps many times:
Here a lissome young lady explains why she would like to be a mermaid. Maybe she was a fish in a former incarnation:
Mermaid model Kariel who has the luck to live in Hawaii shows her stuff:
Here is the trailer (or coming attraction) for Mr. Peabody and the Mermaid. I have a page on it that you can see here.