More Weirdness from the Golden Age (circa 1940)

How do you challenge Hawkman, the Winged Wonder?  Have him faced with an invasion from an underwater race, the Kogats.  How do you have him overcome the challenge?  With a literal deus ex machina courtesy of Flash Comics #9 -- Poseidon grants Hawkman the ability to speak and breathe underwater!!!  Wonder if we'll ever see that ability used again?