Batman Issue 581

"Orca: Part 3: Diver Down"
After Orca was shot, she grabbed Bader-Smyth and jumped into the ocean. While he pursued them, Batman got a report from Alfred: Dr. Balin had been doing stem cell research on killer whales in order to possibly cure her handicap. Bader-Smyth shot Orca; Batman got them both to the surface. Dr. Balin took another dose of her serum, became Orca, and got away. Charges were later brought against Bader-Smyth for a number of crimes.

Individuals

 * Batman
 * Alfred Pennyworth
 * Orca

Locations

 * Gotham City
 * Batcave

Items

 * Batarang