http://www.pcgamer.com/an-enormous-space-fish-has-been-found-in-the-destiny-2-beta/

For new PC players that might not know, it's long been a tradition to unravel secrets about the future of Destiny by doing what we know best: glitching through walls. What would Destiny 2's debut on the PC be without a discovery of our own? And hoo-boy, it's a biggun. Let's reel this one in. 

Reddit user XonVisniyr was diligently exploiting collision detection on the small slice of the Nessus overworld leading into the strike mission, when this popped into view.