Colwellia marinimaniae is a hyperpiezophilic bacterium from the genus Colwellia which has been isolated from deep regions of the Mariana Trench.[1][2][3][4] It is, so far, the most piezophilic organism yet described, with an optimal growth pressure of 120 MPa (approximately 1,200 atmospheres).
^Parker, Charles Thomas; Garrity, George M (2016). Parker, Charles Thomas; Garrity, George M (eds.). "Nomenclature Abstract for Colwellia marinimaniae Kusube et al. 2016". The NamesforLife Abstracts. doi:10.1601/nm.29673.