It looks like someone is trying to force dump the price. that doesn't help the credibility of your coin at all.
Welcome to a market economy. What can we do?
Actually devs can do a lot to suprvise their coin from these things.
You would rather own a coin that is manipulated by its devs rather than own/trade a coin that is completely free market and based on a scientific and mathematical proof of work?
I rather trade a coin that is managed well, and not every whale does whatever the hell he wants.
Those things make potential traders run away.
Are you suggesting that this coin is not managed well?
Since the market is not operating the way "you" would like it to, Perhaps you should find out exactly who the whales are and tell them to stop.
Make sure you use emoticons to convey your frustration with them.
I'm sure potential traders will come flocking to the coin once you do that.