Objective-To determine the outcome in nearly drowned children in the British Isles and identify factors that might predict a poor prognosis. Design Results-All of the children who were conscious on admission fully recovered. Of the 64 children unconscious on admission, 31 had normally reactive pupils and all but three (all of whom had severe preexisting neurological disease) recovered fully. Of the 33 children with fixed dilated pupils on admission, 10 fully recovered, 13 died, and 10 had severe neurological deficit. Spontaneous respiratory effect on admission was associated with normal survival. Pupils that remained dilated six hours after admission and fits continuing 24 hours after admission predicted a poor outcome.