SWIMMING ANIMALS 109 



commotion in the water that it looked as if a submarine was 

 going along just below the surface (Fig. 22). 



Fig. 22. — Sketch of an unknown marine animal seen off the coast of Brazil. 



Maybe one day the sea will yield up this, its greatest 

 secret. Maybe not. 



It is at any rate certain that the deep waters of the 

 ocean still hold many secrets unknown to man. William 

 Beebe in his deep sea dives in the Bathysphere records 

 having seen at a depth of 2,450 feet " a very large creature 

 at least twenty feet in length " whose identity he was 

 unable to make out. 



But it remains doubtful whether the sea serpent will 

 ever be found in the waters of Loch Ness. 



