Episode Title:
Serpents of the Deep.
Episode Description:
Birdman and Avenger go after the cunning Dr. Shark to retrieve a government gold-extracting bathysphere which is secreted away in the thief's submarine headquarters. Dr. Shark sends his henchmen and sea monsters after them, capturing Birdman as his sun-charged energy fails, but he recharges his power by short-circuiting a sun machine and uses his solar beam and solar shield to get rid of the sea monsters. Short-circuiting the sub's depth stabilizer, he stops radar bombs in order to finally put Dr. Shark to flight.
