I started with dyeing the wool with fiber reactive dyes and than felted the main image, fishes, starfish and some of the coral included. I did use a bit of needle felting to secure some of the pieces in place and the rest was done with wet felting.
I wanted to add some more coral, so I tried some crochet until I was satisfied with the texture.
Quilting was a good way to give the whole piece a bit of relief. When I was happy with the result, I did sew the crochet pieces onto the rest.
This wall hanging would look lovely in your beach home.