[quote=darkwolf687]
*Echolocation, right? I think sharks also use the water currents too.Yeah, sounds like it might work. Might confer a dreadful disadvantage though, it'd be horrible if there was a continuous loud noise, I think they'd suffer horribly in high noise levels, like bats do. Lol, I can imagine a parody where their enemies defeat them through blasting out non stop death metal xD
[/quote]

If I ever go back to Chaos Noise Marines are gonna be freaking awesome.