Some things I would note if you'd like to make your maps more "realistic": first, the mountains and mountain chain fragments you have arising out of the ocean are too "big". If they were created by volcanic action, there should be an island with tall mountains in the center (aka Hawaii), but what sticks out of the ocean should at least have a flat perimeter around it. If they're part of a mountain chain that is at the boundary of two tectonic plates, then the mountains should extend maybe a few miles off the coast, but then be swallowed up the the sea (I have no idea how deep your oceans are, but using earth as a guide, moving off the continental shelf puts you about 10-12,000 feet down with depths of up to 36,000 feet possible).