The extreme ultraviolet scanner onboard the Planet-B spacecraft has taken EUV images (He II 304 ¿) of both the duskside plasmasphere and nearby outer magnetosphere on September 9--10, 1998. Even during a relatively quiet period the images have revealed that there is a significant amount of escape of plasmaspheric ions from the outer plasmasphere toward the magnetosphere. Such a phenomenon is not expected from the conventional teardrop model of the plasmasphere. Plasmaspheric materials of at least 2.9¿1028 He+ ions were peeled off the main body of the plasmasphere within 12 hours. This quantity corresponds to an ion flux of 6.7¿1024 ions/s under the assumption that the He+/H+ ratio is 10%. If geomagnetic storms occur twice a month, this flux is comparable to the predictions for a stormtime transport. This suggests that the plasmasphere may provide the magnetosphere with significant amount of plasmas even when the geomagnetic activity is low. ¿ 2000 American Geophysical Union