This week we become environmental heroes, bro. You know why? Because THE Arthur Curry, a.k.a. Aquaman, makes his first-live action appearance as the Florida native who beats Clark to Lois' rescue at Crater Lake. After trying to trash Arthur due to his distrust of him, Clark finds out that Lex is behind a military experiment that is threatening the marine life that Arthur cares about. We also get our first appearance of Dr. Milton Fine, Clark's new world history professor, who seems to have a disdain for the Luthors. But does this work in Clark's favor?

Alan Ritchson (Reacher, Titans, Blue Mountain State) special guest stars as original DC Comics character Arthur Curry, a.k.a. Aquaman.

James Marsters (Buffy: The Vampire Slayer, Runaways) special guest stars as Dr. Milton Fine.

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