Relationships of shell height, shell width, shell weight, foot weight, dry foot weight, and total weight were examined with shell length forHaliotis irisfrom different localities. Mean length varied among 61 localities explaining more than 70% of the variation in the other parameters which covaried with length. Significant sources of variation in mean length included latitude (sea surface temperature) and relative exposure. Variation in all morphometric parameters occurred among localities but such variation, although significant, was generally not large (< 10 % of mean values). Although the spatial scales examined included 100s of km, the largest morphometric variation shown was between neighboring localities (200 m apart). This and the high residual variation in any morphometric parameter forH. irisfrom any location indicated that morphometric variation occurred over small spatial scales. The suggestion that some localities ofH. iriswere “stunted” with small average lengths and had individuals with relatively peaked shells and greater weights compared with those from other localities, was not supported by our results.