Dave turned again to his task of exploring the under-sea wall.
These were the first moving pictures of under-sea life that had ever been produced.
The beauties of under-sea life can be described only by a poet.
And now came the under-sea boat to test American hospitality.
It was a blind wave, feeling round some under-sea cavern of suffering.
"As safe as any part of this under-sea voyage," replied the professor.
I made my suits and even my under-sea motion picture outfit there and its private and no one will disturb us.
You see we havent got an under-sea sending set rigged up yet and the one hes got is just a sort of makeshift for experimenting.
Of course, if these men had under-sea radio they must hear messages from those on land as well as the boys.
Indeed, Rawlins had done fully as much to make the under-sea radio a success as had the boys.