YOU SAID:

There was a man who had dwelt in the seas and traveled across the islands

INTO JAPANESE

海に住み、島々を旅した男がいました

BACK INTO ENGLISH

There was a man who lived in the sea and traveled the islands

INTO JAPANESE

海に住んで島を旅した男がいました

BACK INTO ENGLISH

There was a man who lived on the sea and traveled on the island

INTO JAPANESE

海に住んで島を旅した男がいた

BACK INTO ENGLISH

There was a man who lived on the sea and traveled on the island