Oyster Pearl PRL is one of the most undervalued crypto in the market today and it's future is brighter because it will soon launch it's main net that will be useful on sending our files into the tangle and use PRL to keep our files in the tangle for a long time.
They will conduct Oyster Shell SHL on Oyster PRL holders only so people will do get more PRL as they could before the airdrop date to get Oyster SHL in their wallets.