If Sea of Thieves was to add an Emissary system to the hunter's call here's an idea from me on how it would work.
When you reach grade 5 for the hunter's call you have the ability to check your map to see if a kraken or a megalodon has spawned, both bosses having corresponding icons that mark themselves. Maybe for the Megalodon it wouldn't tell you what type just for the sake of balancing.
That's pretty much it.
