When I lived in New England, and explained to people that I dove frequently, I was often asked what there was to see. The assumption being, there is nothing to see. Indeed the opposite.
The colors of coral reefs are in these rocky habitats, one just has to peer closely at the marvelous encrusting animals; sponges, anemones, starfish, bryozoans, colonial tunicates, and coralline algae. All those groups of animals are in this picture.
Never underestimate the nature in your backyard.