caribsea's Mineral mud is a unique blend of sediments that duplicate tropical fringing coastal mangrove environments.Mineral Mud particles are in a size range compatible with soft,burrowing infaunal, macro animal assagrasses,macro-algaes,and mangroves,Mineral Mud provides a variety of trace elements,strontium,iron,sulfur and free carbon. in addiion,mineral mud contains live marine bacteria to complete the tropical ecosystem.