Chalkie's Beach, also called Stockyard Beach, sits on Haslewood Island across from Whitehaven. It has the same pale, clean Whitsunday look but usually without quite the same crush of fame.
Some boat trips use it as a quieter swim or snorkel stop when conditions suit. It is not a destination with facilities; bring what you need, listen to crew instructions, and treat it as a national-park beach rather than a resort shore.