  We discuss some applications of the unquenched quark model which is an
extension of the CQM that includes the effects of sea quarks via a 3P0
quark-antiquark pair-creation mechanism. Particular attention is paid to the
electromagnetic couplings and beta decays of baryons. It is shown that the
observed discrepancies between the experimental data and the predictions of the
CQM can be accounted for in large part by the effects of sea quarks in the
unquenched quark model.
