ClawofChaos was sailing the seas with his crew when both the Kraken and Megalodon decided to come and have a go, at the same time. While it is not uncommon to meet the wrath of the Kraken or the Megalodon, but getting the arse end of both is a 24 Karat run of shit luck.
The whole event is extremely Rare (pun intended) and requires the stars aligning and probably a sacrificial offering to take place. That, or it’s a lucky combination of mechanics, timing and positioning. Probably the latter.