  Nontrivial $q \bar q$ sea effects have their origin in the low-$Q^2$ dynamics
of strong QCD. We present here a quark model calculation of the contribution of
$s \bar s$ pairs arising from a {\it complete} set of OZI-allowed strong
$Y^*K^*$ hadronic loops to the net spin of the proton, to its charge radius,
and to its magnetic moment. The calculation is performed in an ``unquenched
quark model" which has been shown to preserve the spectroscopic successes of
the naive quark model and to respect the OZI rule. We speculate that an
extension of the calculation to the nonstrange sea will show that most of the
``missing spin" of the proton is in orbital angular momenta.
