colwellia marinimaniae colwellia marinimaniae colwellia marinimaniae is a hyperpiezophilic bacterium from the genus colwellia which has been isolated from deep regions of the mariana trench. it is, so far, the most piezophilic organism yet described, with an optimal growth pressure of 120 mpa (approximately 1,200 atmospheres). colwellia marinimaniae scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: alteromonadales family: colwelliaceae genus: colwellia species: c. marinimaniae binomial name colwellia marinimaniaekusube et al. 2017 type strain atcc tsd-5, mtcd1, jcm 30270 synonyms colwellia cameronii