A bearwhale (or bear whale) is a person who owns a lot of cryptocurrencies and uses their sizable account to manipulate the market by driving down prices and making money.
In 2014, a trader known as “BearWhale” was spotted. This individual was a Bitcoin collector who was attempting to sell 30,000 Bitcoin all at once for $9 million, or $300 per coin. The reason for this and their eagerness to sell their money were unknown at the time. But this massive sale was made through Bitstamp, and it was so big that it caused a temporary wall and distorted the Bitcoin markets.