thalassococcus halodurans thalassococcus halodurans thalassococcus halodurans is a gram-negative, strictly aerobic and halotolerant bacterium from the genus of thalassococcus which has been isolated from the sponge halichondria panicea from the friday harbor in the united states. thalassococcus halodurans scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: thalassococcus species: t. halodurans binomial name thalassococcus haloduranslee et al. 2007 type strain dsm 26915, jcm 13833, nrrl b-41465