Sorry,Marine Blue 3 is not avaiable yet. We will update Marine Blue as soon as it is released.
If you want to read new chapter of Marine Blue at the first time,you can subscribe it. We’ll send your the email as soon as Marine Blue 3 updates.

Have more fun on facebook:

https://www.facebook.com/mangahomelife/

Or enjoy fantasy shoujo moments on tumblr:

https://onlyshoujo.tumblr.com/

You can read some other great manga to kill time