Sirens

many a pilot and scrap diver can tell a pale-faced tale of a close encounter with a siren. Horrifying, predatory, and openly hostile, sirens lurk in derelicts and debris fields, sirens have an uncanny ability to give off signals similar to SOS beacons, power signatures, or even radio signals. They can broadcast on radio frequencies, parroting back voices that they've received on radio waves. Sirens have long, lean appearences, characterized by angular shapes and jagged, razor-sharp edges. All sirens have between one and six eyes, at least one orifice similar to a mouth with which they consume sustenance, and two arms, ending in two claws. Some have legs and feet, or multiple arms, some have bodies that simply taper off to a spine-like "tail". They are opportunistic and conserve their energy, drifting slowly and gracefully through their nests, saving their energy for short, violent bursts. Of note to their morphology is that they behave as predatory scavengers, and have adapted to "eat" organic matter and convert it into sustenance. Of particular curiosity is that some have adapted to incorporate organic tissue into their own morphology, and appear as an amalgamation of lifeless body parts from organisms they've consumed, riddled with jagged points of metal protruding from the flesh and orifices. They use their "claws" and "teeth", comprising or lining their hands or mouth, to rip and tear organic matter into a form they can consume. Sirens can lurk by themselves or in colonies.