Yeah, they are those who manipulated the market, they can easily dump and pump the market because they ar holding huge amounts of coins. So you should not be FOMO because of what whales are doing, if they dump it then just and hold and never sell yours because you won't lose money if you will still hold your coin because if it results in panic selling then that would be a good entry for the whales then the market will get hard to reach the moon.
it's actually not that easy. the whales in the market are also waiting for a good moment to start their market manipulation. sometimes they work with influencers or they themselves actually provide the signal in their channel group.
although whales with huge money, they also need a lot of followers to be able to generate some sentiment in the market.