Brikar biochemistry was silicon-based, and their rock-like skin is composed of various mineral and geologic compounds. They are highly resistant to injury, even from sustained energy blasts, can lift several hundred pounds with ease, and are able to hold their breath for extended periods. The average Brikar lifespan is at least several hundred years. However, they must wear gravity compensators in order to retain mobility in standard environments. Brikar adolescence involves the shedding of one's outer dermal layers, revealing new, slightly less tough skin beneath. (Star Trek: New Frontier)