Upon its formation in 2006, Oceano was originally a grindcore band formed by guitarist Jeremy Carroll that featured six members.[3] Carrol gathered Chicago guitarist Andrew Mikhail, vocalist Adam Warren, drummer Michael Southcomb and bassist Kevin Hare to form Oceano's first full line-up in 2007. This Oceano performed at local venues in the Chicago area.
A year later, Southcomb and Hare parted ways with the band. They were soon replaced by drummer Daniel Terchin and bassist Jason Jones.[3] Oceano signed to Earache Records in 2008 after gaining a notable local following. Oceano recorded their full debut album Depths in late 2008, releasing it worldwide on April 20, 2009.
Jeremy Carrol was fired from the band in January 2009 due to personality conflicts between members.[4][5] Carrol's leaving left no members from the original Oceano lineup left in the band. On February 3, 2010 the band's lead guitarist, Andrew Mikhail also departed from the band.[6][7][8]
Oceano was a part of the 2011 Summer Slaughter Tour in North America alongside co-headliners Whitechapel and The Black Dahlia Murder.
In January 2012, a rumor spread that the band was disestablishing, which was confirmed as false by Earache. Instead, an announcement was made that the band actually was going on a short hiatus after their performance at the New England Metal and Hardcore Festival due to vocalist, Adam Warren, becoming a father.[9] After some time spent away from the band, however, Oceano decided not to disband, and to continue touring. They are currently a part of the roster for the US summer Scream It Like You Mean it tour and also revealed that they had begun writing their next album, Incisions, due in 2013.[10] The first lyric video from the album, "Slow Murder", was released on January 28, 2013.