Giant whale won't leave diver alone - Then she notices the terrifying reason why

Elena's mind raced with frantic thoughts as she tried to formulate a plan of escape. With the tiger shark closing in, she knew that every moment counted. 

Ignoring the throbbing pain of her bruises and the relentless tug of the whale's movements, she scanned the horizon for any sign of hope amidst the vast expanse of the ocean.