Conversation so far:
What started the Silver Age for Aquaman?
The Silver Age Aquaman made his first appearance in Adventure Comics #260, published in May 1959.
What else happened in the Silver Age for Aquaman besides making his first appearance in Adventure Comics #260, published in May 1959?
Aquaman's ability to talk with fish eventually expanded to full-fledged telepathic communication with sea creatures even from great distances.
What other powers did Aquaman have besides telepathic communication with sea creatures in the Silver Age?
Due to his heritage, Aquaman discovers as a youth that he possesses various superhuman abilities, including the powers of surviving underwater, communication with sea life, and tremendous swimming prowess.
Did Aquaman have any enemies?
Orm disappeared after becoming an amnesiac and would resurface years later as Aquaman's nemesis, Ocean Master.

Question: Who was Orm before he became Ocean Master?
Self-contained rewrite: Who was Orm before he became Ocean Master?