1 definition by YM54

Contrary to what unearth said (Mastodon is obviously Sludge-Progressive Metal, but could be called whalecore), Whalecore is a subgenre of Heavy Metal that includes a very long, droned, slow songs with some heaviness, and a very melodic flow.
Ahab- The Hunt www.youtube.com/watch?v=fHVkJgwAXgE is a perfect example of whalecore
by YM54 February 3, 2012