For me a crypto whale is a person with a million dollar worth of crypto either BTC or any major alts. A group of whales has a capability of shaking the market or change the price direction either going up or going down.
Today, BTC long whales, and short whales are battling for the BTC price. Lets see who will win. If the BTC longs wins. We will see BTC at $33k this coming July. If not, BTC will crash to 1k
What is your definition of a whale? How many BTCs do you need to have to be a whale?
Besides that they are the one that creates a big impact with the price or the value of bitcoin, if they buy the tendency is the price moves upward but when they cash out it all then the price will go down, it depends on how much they are investing, the advantage of it is if the market goes up then the people get to encourage more.