Breakwater. Reverse Fairytales (Little Mermaid), #3

Erica has finally realised her dream of being out in the ocean with Ari, although with him having a tail and being unable to walk on land, and her still not being able to breathe underwater, their lives are far from perfect. When their boat wrecks upon a strange island they realize it's not just the ocean that separates them. As they struggle to survive on the island and find a way off, Erica and Ari must confront the reality that their love may never be enough to bridge the divide between their two worlds.
Breakwater is a heart-wrenching tale of love, loss, and the power of hope in the face of insurmountable obstacles.