Haloferax mucosum was isolated from Hamelin Pool, Shark Bay, Australia. When grown in the lab, they form large (3–5 mm diameter), pink, mucoid, domed colonies .
Unfortunately...It seems that there is only one paper available about H. mucosum: Haloferax elongans sp. nov. and Haloferax mucosum sp. nov., isolated from microbial mats from Hamelin Pool, Shark Bay, Australia
Hamelin pool is also where the oldest living organisms--stromatolites--can be found. They are colonies of cyanobacteria that form these rock-like structures within the water of Hamelin Pool.