The whales are the big time player in the crypto market they posses huge amount of bitcoin or altcoins their decision per time affect the market positively or negatively . in most cases are driven with fundamental principles in the trading , even in the forex market their are whales , they are ready to go against or in favour of the price action movement. any body can be a whale but the determine factors is how much you possess in your portfolio.my best advice is make the trading trend your friend and you are ready to cash out profit.