The album cover art is actually a very thin container full of water and miniature piranhas.
Some of the songs from Dethwater were included in actual Dethklok releases.
In Dethkomedy, Dethklok is sued by a group of Dethklok fans injured after mindlessly and stupidly following the lyrics. In typical Dethklok fashion they heckle the fans' lawyer (causing the crowd to laugh at Dethklok's remarks). Charles Foster Ofdensen successfully defends the band pointing out the album was only meant for fish, Judge Alfonzo rules in favor of Dethklok. After the trial Pickles reveals that the album caused at least a million people to accidentally kill themselves (possible hyperbole).
Interestingly enough, in 2015 it was a research group accidentally discovered that sharks are attracted to vibrations of death metal music played underwater. 
Known songs in DethwaterEdit
- Murmaider II: The Water God
- Better Metal Snake
- The Lost Vikings
- Electric Eelchair
- Skulled and Gutted and Undercooked
- Scuba Tank Filled with Farts