  We show that, in the context of brane-world scenarios with low tension
$\tau=f^4$, massive brane fluctuations are natural dark matter candidates. We
calculate the present abundances for both hot(warm) and cold branons in terms
of the branon mass $M$ and the tension scale $f$. The results are compared with
the current experimental bounds on these parameters. We also study the
prospects for their detection in direct search experiments and comment on their
characteristic signals in the indirect ones.
