Fertilization success of some species is known to be
affected by current speed (Pennington 1985; Yund &
McCartney 1994). In 1997 we placed a General Oceanics
mechanical flow meter (model 2030 with low-speed
rotor) 2–3 m from shore in 0.5 m water and measured the
direction and velocity of the current (number of
revolutions/10 min) for 37 tides. We measured the
current 1 h before the tide, at the time of the predicted
maximum high tide and 1 h after the maximum.