In this paper, food intake of whiting Merlangius merlangus, in the Eastern Irish Sea is estimated using various models developed for food consumption. A new linear model for whiting is also developed and tested. The impact of whiting food consumption in the Irish Sea is considered. It was estimated that young whiting (age 0-3) eat between 1.29 and 6.57 g day(-1) in February (temperature 7.8 degrees C). By August when temperature has reached its annual maximum (18 degrees C), these values increased by approximately 60-80%.