Learn how to make gorgeous epoxy resin Ocean waves with this downloadble video from Lauren MacLeod at Mermaid Trash. 
15 minture video with breakdown of two different techniques and supplies used to create.
This video is from the beginners resin course, and you DO NOT need to purchase this video if you bought the course. 

File is a .zip folder with .mp4 downloaded directly to your computer, phone or tablet.

Resin Ocean waves tutorial