This is a great little video showing oarfish in shallow water. Some reports of sea serpents are thought to have been inspired by these animals and it's easy to see why. 

 

 

What's the speculation here?

2 hours ago, swansont said:

What's the speculation here?

Are oarfish the inspiration for sea serpents

One old report with a painting depicting the sea serpent. 

https://blogs.loc.gov/folklife/2016/08/great-american-sea-serpent/

3 minutes ago, Moontanman said:

Are oarfish the inspiration for sea serpents

No model, no data, just a video? There's no science here (also, just posting videos in this way is not in compliance with rule 2.7, as you should know). This is not a topic for speculations. Moved.