  Weak radiative decays of beauty baryons into strange baryons, induced by the
electroweak penguin, are estimated by using a quark model approach. Relations
between formfactors in the semileptonic and in the weak radiative decays are
derived within the heavy quark effective theory. The partial decay widths are
found to be of the order of $10^{-15}{\rm MeV}$ for
$\Lambda_b\rightarrow\Lambda\gamma$ and $\Xi_b\rightarrow\Xi\gamma$ and of the
oder of $10^{-13}{\rm MeV}$ for $\Omega_b\rightarrow\Omega\gamma$. The
$\Omega_b$ radiative decay is thus expected at the sizable branching ratio of
approximately $10^{-4}$.
